Bug 1611415 - Prefer using std::move over forget. r=froydnj

Differential Revision: https://phabricator.services.mozilla.com/D60980

--HG--
extra : moz-landing-system : lando

accessible/base/nsAccessiblePivot.cpp

@@ -398,7 +398,7 @@ bool nsAccessiblePivot::IsDescendantOf(Accessible* aAccessible,
 bool nsAccessiblePivot::MovePivotInternal(Accessible* aPosition,
                                           PivotMoveReason aReason,
                                           bool aIsFromUserInput) {
-  RefPtr<Accessible> oldPosition = mPosition.forget();
+  RefPtr<Accessible> oldPosition = std::move(mPosition);
   mPosition = aPosition;
   int32_t oldStart = mStartOffset, oldEnd = mEndOffset;
   mStartOffset = mEndOffset = -1;

docshell/base/BrowsingContext.cpp

@@ -1562,7 +1562,7 @@ bool IPDLParamTraits<dom::BrowsingContext*>::Read(
     browsingContext.get()->Release();
   }
 
-  *aResult = browsingContext.forget();
+  *aResult = std::move(browsingContext);
   return true;
 }
 

docshell/base/CanonicalBrowsingContext.cpp

@@ -490,7 +490,7 @@ CanonicalBrowsingContext::ChangeFrameRemoteness(const nsAString& aRemoteType,
             change->Complete(aContentParent);
           },
           [change](nsresult aRv) { change->Cancel(aRv); });
-  return promise.forget();
+  return promise;
 }
 
 already_AddRefed<Promise> CanonicalBrowsingContext::ChangeFrameRemoteness(

docshell/base/WindowContext.cpp

@@ -214,7 +214,7 @@ bool IPDLParamTraits<dom::WindowContext*>::Read(
     windowContext.get()->Release();
   }
 
-  *aResult = windowContext.forget();
+  *aResult = std::move(windowContext);
   return true;
 }
 

docshell/base/nsDefaultURIFixup.cpp

@@ -428,7 +428,7 @@ nsDefaultURIFixup::KeywordToURI(const nsACString& aKeyword,
     }
 
     nsCOMPtr<nsIURI> temp = DeserializeURI(uri);
-    info->mPreferredURI = temp.forget();
+    info->mPreferredURI = std::move(temp);
     return NS_OK;
   }
 

docshell/base/nsDocShellEditorData.cpp

@@ -26,7 +26,7 @@ nsDocShellEditorData::~nsDocShellEditorData() { TearDownEditor(); }
 
 void nsDocShellEditorData::TearDownEditor() {
   if (mHTMLEditor) {
-    RefPtr<HTMLEditor> htmlEditor = mHTMLEditor.forget();
+    RefPtr<HTMLEditor> htmlEditor = std::move(mHTMLEditor);
     htmlEditor->PreDestroy(false);
   }
   mEditingSession = nullptr;
@@ -43,7 +43,7 @@ nsresult nsDocShellEditorData::MakeEditable(bool aInWaitForUriLoad) {
   if (mHTMLEditor) {
     NS_WARNING("Destroying existing editor on frame");
 
-    RefPtr<HTMLEditor> htmlEditor = mHTMLEditor.forget();
+    RefPtr<HTMLEditor> htmlEditor = std::move(mHTMLEditor);
     htmlEditor->PreDestroy(false);
   }
 
@@ -72,7 +72,7 @@ nsresult nsDocShellEditorData::SetHTMLEditor(HTMLEditor* aHTMLEditor) {
   }
 
   if (mHTMLEditor) {
-    RefPtr<HTMLEditor> htmlEditor = mHTMLEditor.forget();
+    RefPtr<HTMLEditor> htmlEditor = std::move(mHTMLEditor);
     htmlEditor->PreDestroy(false);
     MOZ_ASSERT(!mHTMLEditor,
                "Nested call of nsDocShellEditorData::SetHTMLEditor() detected");

docshell/shistory/MaybeNewPSHEntry.cpp

@@ -88,7 +88,7 @@ bool IPDLParamTraits<dom::CrossProcessSHEntry*>::Read(
             newEntry.mSharedID);
         dom::ContentChild::GetSingleton()->BindPSHEntryEndpoint(
             std::move(newEntry.mEndpoint), do_AddRef(entry).take());
-        *aEntry = entry.forget();
+        *aEntry = std::move(entry);
         return true;
       });
 }

docshell/shistory/SHistoryParent.cpp

@@ -232,7 +232,7 @@ bool SHistoryParent::RecvFindEntryForBFCache(
         *aEntry = nullptr;
         *aIndex = -1;
       } else {
-        *aEntry = shEntry.forget();
+        *aEntry = std::move(shEntry);
         *aIndex = i;
       }
 

docshell/shistory/nsSHistory.cpp

@@ -1580,7 +1580,7 @@ nsresult nsSHistory::InitiateLoad(nsISHEntry* aFrameEntry,
   nsCOMPtr<nsIContentSecurityPolicy> csp = aFrameEntry->GetCsp();
   loadState->SetCsp(csp);
 
-  aLoadResult.mLoadState = loadState.forget();
+  aLoadResult.mLoadState = std::move(loadState);
 
   return NS_OK;
 }

dom/animation/Animation.cpp

@@ -1727,7 +1727,7 @@ void Animation::DoFinishNotification(SyncNotifyFlag aSyncNotifyFlag) {
   } else if (!mFinishNotificationTask) {
     RefPtr<MicroTaskRunnable> runnable = new AsyncFinishNotification(this);
     context->DispatchToMicroTask(do_AddRef(runnable));
-    mFinishNotificationTask = runnable.forget();
+    mFinishNotificationTask = std::move(runnable);
   }
 }
 

dom/base/BodyConsumer.cpp

@@ -641,7 +641,7 @@ void BodyConsumer::ContinueConsumeBody(nsresult aStatus, uint32_t aResultLength,
   mBodyConsumed = true;
 
   MOZ_ASSERT(mConsumePromise);
-  RefPtr<Promise> localPromise = mConsumePromise.forget();
+  RefPtr<Promise> localPromise = std::move(mConsumePromise);
 
   RefPtr<BodyConsumer> self = this;
   auto autoReleaseObject =
@@ -751,7 +751,7 @@ void BodyConsumer::ContinueConsumeBlobBody(BlobImpl* aBlobImpl,
   mBodyConsumed = true;
 
   MOZ_ASSERT(mConsumePromise);
-  RefPtr<Promise> localPromise = mConsumePromise.forget();
+  RefPtr<Promise> localPromise = std::move(mConsumePromise);
 
   if (!aShuttingDown) {
     RefPtr<dom::Blob> blob = dom::Blob::Create(mGlobal, aBlobImpl);

dom/base/BodyStream.cpp

@@ -121,7 +121,7 @@ void BodyStream::Create(JSContext* aCx, BodyStreamHolder* aStreamHolder,
     // Note, this will create a ref-cycle between the holder and the stream.
     // The cycle is broken when the stream is closed or the worker begins
     // shutting down.
-    stream->mWorkerRef = workerRef.forget();
+    stream->mWorkerRef = std::move(workerRef);
   }
 
   aRv.MightThrowJSException();

dom/base/ChromeUtils.cpp

@@ -337,7 +337,7 @@ class IdleDispatchRunnable final : public IdleRunnable,
       RefPtr<IdleDeadline> idleDeadline =
           new IdleDeadline(mParent, mTimedOut, deadline.ToMilliseconds());
 
-      RefPtr<IdleRequestCallback> callback(mCallback.forget());
+      RefPtr<IdleRequestCallback> callback(std::move(mCallback));
       MOZ_ASSERT(!mCallback);
       callback->Call(*idleDeadline, "ChromeUtils::IdleDispatch handler");
       mParent = nullptr;

dom/base/Document.cpp

@@ -5987,7 +5987,7 @@ Result<nsCOMPtr<nsIURI>, nsresult> Document::ResolveWithBaseURI(
   nsCOMPtr<nsIURI> resolvedURI;
   MOZ_TRY(
       NS_NewURI(getter_AddRefs(resolvedURI), aURI, nullptr, GetDocBaseURI()));
-  return std::move(resolvedURI);
+  return resolvedURI;
 }
 
 URLExtraData* Document::DefaultStyleAttrURLData() {
@@ -8708,7 +8708,7 @@ mozilla::dom::Nullable<mozilla::dom::WindowProxyHolder> Document::Open(
   if (!newBC) {
     return nullptr;
   }
-  return WindowProxyHolder(newBC.forget());
+  return WindowProxyHolder(std::move(newBC));
 }
 
 Document* Document::Open(const Optional<nsAString>& /* unused */,
@@ -8868,7 +8868,7 @@ Document* Document::Open(const Optional<nsAString>& /* unused */,
         aError.Throw(rv);
         return nullptr;
       }
-      newURI = noFragmentURI.forget();
+      newURI = std::move(noFragmentURI);
     }
 
     // UpdateURLAndHistory might do various member-setting, so make sure we're
@@ -11696,7 +11696,7 @@ static already_AddRefed<nsPIDOMWindowOuter> FindTopWindowForElement(
 
   // Trying to find the top window (equivalent to window.top).
   if (nsCOMPtr<nsPIDOMWindowOuter> top = window->GetInProcessTop()) {
-    window = top.forget();
+    window = std::move(top);
   }
   return window.forget();
 }
@@ -11707,11 +11707,11 @@ static already_AddRefed<nsPIDOMWindowOuter> FindTopWindowForElement(
  */
 class nsAutoFocusEvent : public Runnable {
  public:
-  explicit nsAutoFocusEvent(already_AddRefed<Element>&& aElement,
-                            already_AddRefed<nsPIDOMWindowOuter>&& aTopWindow)
+  explicit nsAutoFocusEvent(nsCOMPtr<Element>&& aElement,
+                            nsCOMPtr<nsPIDOMWindowOuter>&& aTopWindow)
       : mozilla::Runnable("nsAutoFocusEvent"),
-        mElement(aElement),
-        mTopWindow(aTopWindow) {}
+        mElement(std::move(aElement)),
+        mTopWindow(std::move(aTopWindow)) {}
 
   NS_IMETHOD Run() override {
     nsCOMPtr<nsPIDOMWindowOuter> currentTopWindow =
@@ -11784,7 +11784,7 @@ void Document::TriggerAutoFocus() {
     }
 
     nsCOMPtr<nsIRunnable> event =
-        new nsAutoFocusEvent(autoFocusElement.forget(), topWindow.forget());
+        new nsAutoFocusEvent(std::move(autoFocusElement), topWindow.forget());
     nsresult rv = NS_DispatchToCurrentThread(event.forget());
     NS_ENSURE_SUCCESS_VOID(rv);
   }
@@ -12876,7 +12876,7 @@ class PendingFullscreenChangeList {
           nsCOMPtr<nsIDocShellTreeItem> root;
           mRootShellForIteration->GetInProcessRootTreeItem(
               getter_AddRefs(root));
-          mRootShellForIteration = root.forget();
+          mRootShellForIteration = std::move(root);
         }
         SkipToNextMatch();
       }
@@ -12911,7 +12911,7 @@ class PendingFullscreenChangeList {
           while (docShell && docShell != mRootShellForIteration) {
             nsCOMPtr<nsIDocShellTreeItem> parent;
             docShell->GetInProcessParent(getter_AddRefs(parent));
-            docShell = parent.forget();
+            docShell = std::move(parent);
           }
           if (docShell) {
             break;
@@ -15690,7 +15690,7 @@ already_AddRefed<mozilla::dom::Promise> Document::RequestStorageAccess(
                   ContentPermissionRequestBase::DelayedTaskType::Request);
             });
 
-        return p.forget();
+        return std::move(p);
       };
       AntiTrackingCommon::AddFirstPartyStorageAccessGrantedFor(
           NodePrincipal(), inner, AntiTrackingCommon::eStorageAccessAPI,
@@ -15986,7 +15986,7 @@ void Document::RecomputeLanguageFromCharset() {
   }
 
   mMayNeedFontPrefsUpdate = true;
-  mLanguageFromCharset = language.forget();
+  mLanguageFromCharset = std::move(language);
 }
 
 nsICookieSettings* Document::CookieSettings() {

dom/base/IdleRequest.cpp

@@ -57,7 +57,7 @@ void IdleRequest::IdleRun(nsPIDOMWindowInner* aWindow,
 
   RefPtr<IdleDeadline> deadline =
       new IdleDeadline(aWindow, aDidTimeout, aDeadline);
-  RefPtr<IdleRequestCallback> callback(mCallback.forget());
+  RefPtr<IdleRequestCallback> callback(std::move(mCallback));
   MOZ_ASSERT(!mCallback);
   callback->Call(*deadline, "requestIdleCallback handler");
 }

dom/base/ImageEncoder.cpp

@@ -99,7 +99,7 @@ class EncodingCompleteEvent : public CancelableRunnable {
     nsresult rv = NS_OK;
 
     // We want to null out mEncodeCompleteCallback no matter what.
-    RefPtr<EncodeCompleteCallback> callback(mEncodeCompleteCallback.forget());
+    RefPtr<EncodeCompleteCallback> callback(std::move(mEncodeCompleteCallback));
     if (!mFailed) {
       RefPtr<BlobImpl> blobImpl = new MemoryBlobImpl(mImgData, mImgSize, mType);
       rv = callback->ReceiveBlobImpl(blobImpl.forget());

dom/base/PostMessageEvent.cpp

@@ -69,7 +69,7 @@ PostMessageEvent::Run() {
   // The document URI is just used for the principal mismatch error message
   // below. Use a stack variable so mCallerURI is not held onto after
   // this method finishes, regardless of the method outcome.
-  nsCOMPtr<nsIURI> callerURI = mCallerURI.forget();
+  nsCOMPtr<nsIURI> callerURI = std::move(mCallerURI);
 
   // If we bailed before this point we're going to leak mMessage, but
   // that's probably better than crashing.

dom/base/ResizeObserver.cpp

@@ -134,7 +134,7 @@ already_AddRefed<ResizeObserver> ResizeObserver::Constructor(
     return nullptr;
   }
 
-  return do_AddRef(new ResizeObserver(window.forget(), doc, aCb));
+  return do_AddRef(new ResizeObserver(std::move(window), doc, aCb));
 }
 
 void ResizeObserver::Observe(Element& aTarget,
@@ -306,7 +306,7 @@ void ResizeObserverEntry::SetContentRectAndSize(const nsSize& aSize) {
   nsRect rect(nsPoint(padding.left, padding.top), aSize);
   RefPtr<DOMRect> contentRect = new DOMRect(this);
   contentRect->SetLayoutRect(rect);
-  mContentRect = contentRect.forget();
+  mContentRect = std::move(contentRect);
 
   // 2. Update mContentBoxSize.
   const WritingMode wm = frame ? frame->GetWritingMode() : WritingMode();

dom/base/ResizeObserver.h

@@ -88,9 +88,9 @@ class ResizeObserver final : public nsISupports, public nsWrapperCache {
   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(ResizeObserver)
 
-  ResizeObserver(already_AddRefed<nsPIDOMWindowInner>&& aOwner,
-                 Document* aDocument, ResizeObserverCallback& aCb)
-      : mOwner(aOwner), mDocument(aDocument), mCallback(&aCb) {
+  ResizeObserver(nsCOMPtr<nsPIDOMWindowInner>&& aOwner, Document* aDocument,
+                 ResizeObserverCallback& aCb)
+      : mOwner(std::move(aOwner)), mDocument(aDocument), mCallback(&aCb) {
     MOZ_ASSERT(mOwner, "Need a non-null owner window");
     MOZ_ASSERT(mDocument, "Need a non-null doc");
     MOZ_ASSERT(mDocument == mOwner->GetExtantDoc());

dom/base/SelectionChangeEventDispatcher.cpp

@@ -138,7 +138,7 @@ void SelectionChangeEventDispatcher::OnSelectionChange(Document* aDoc,
           root = root->GetParent();
         }
 
-        target = root.forget();
+        target = std::move(root);
       }
     }
 

dom/base/WindowNamedPropertiesHandler.cpp

@@ -106,7 +106,7 @@ bool WindowNamedPropertiesHandler::getOwnPropDescriptor(
       // global scope is still allowed, since |var| only looks up |own|
       // properties. But unqualified shadowing will fail, per-spec.
       JS::Rooted<JS::Value> v(aCx);
-      if (!ToJSValue(aCx, WindowProxyHolder(child.forget()), &v)) {
+      if (!ToJSValue(aCx, WindowProxyHolder(std::move(child)), &v)) {
         return false;
       }
       FillPropertyDescriptor(aDesc, aProxy, 0, v);

dom/base/WindowProxyHolder.h

@@ -33,7 +33,7 @@ class WindowProxyHolder {
   explicit WindowProxyHolder(BrowsingContext* aBC) : mBrowsingContext(aBC) {
     MOZ_ASSERT(mBrowsingContext, "Don't set WindowProxyHolder to null.");
   }
-  explicit WindowProxyHolder(already_AddRefed<BrowsingContext>&& aBC)
+  explicit WindowProxyHolder(RefPtr<BrowsingContext>&& aBC)
       : mBrowsingContext(std::move(aBC)) {
     MOZ_ASSERT(mBrowsingContext, "Don't set WindowProxyHolder to null.");
   }
@@ -42,7 +42,7 @@ class WindowProxyHolder {
     MOZ_ASSERT(mBrowsingContext, "Don't set WindowProxyHolder to null.");
     return *this;
   }
-  WindowProxyHolder& operator=(already_AddRefed<BrowsingContext>&& aBC) {
+  WindowProxyHolder& operator=(RefPtr<BrowsingContext>&& aBC) {
     mBrowsingContext = std::move(aBC);
     MOZ_ASSERT(mBrowsingContext, "Don't set WindowProxyHolder to null.");
     return *this;

dom/base/nsContentSink.cpp

@@ -1412,7 +1412,8 @@ void nsContentSink::DropParserAndPerfHint(void) {
   // actually broken.
   // Drop our reference to the parser to get rid of a circular
   // reference.
-  RefPtr<nsParserBase> kungFuDeathGrip(mParser.forget());
+  RefPtr<nsParserBase> kungFuDeathGrip = std::move(mParser);
+  mozilla::Unused << kungFuDeathGrip;
 
   if (mDynamicLowerValue) {
     // Reset the performance hint which was set to FALSE

dom/base/nsDOMMutationObserver.cpp

@@ -702,7 +702,7 @@ void nsDOMMutationObserver::TakeRecords(
     current->mNext.swap(next);
     if (!mMergeAttributeRecords ||
         !MergeableAttributeRecord(aRetVal.SafeLastElement(nullptr), current)) {
-      *aRetVal.AppendElement() = current.forget();
+      *aRetVal.AppendElement() = std::move(current);
     }
     current.swap(next);
   }
@@ -755,7 +755,7 @@ already_AddRefed<nsDOMMutationObserver> nsDOMMutationObserver::Constructor(
   }
   bool isChrome = nsContentUtils::IsChromeDoc(window->GetExtantDoc());
   RefPtr<nsDOMMutationObserver> observer =
-      new nsDOMMutationObserver(window.forget(), aCb, isChrome);
+      new nsDOMMutationObserver(std::move(window), aCb, isChrome);
   return observer.forget();
 }
 

dom/base/nsDOMMutationObserver.h

@@ -432,9 +432,9 @@ class nsAnimationReceiver : public nsMutationReceiver {
 
 class nsDOMMutationObserver final : public nsISupports, public nsWrapperCache {
  public:
-  nsDOMMutationObserver(already_AddRefed<nsPIDOMWindowInner>&& aOwner,
+  nsDOMMutationObserver(nsCOMPtr<nsPIDOMWindowInner>&& aOwner,
                         mozilla::dom::MutationCallback& aCb, bool aChrome)
-      : mOwner(aOwner),
+      : mOwner(std::move(aOwner)),
         mLastPendingMutation(nullptr),
         mPendingMutationCount(0),
         mCallback(&aCb),
@@ -490,11 +490,11 @@ class nsDOMMutationObserver final : public nsISupports, public nsWrapperCache {
     MOZ_ASSERT(record);
     if (!mLastPendingMutation) {
       MOZ_ASSERT(!mFirstPendingMutation);
-      mFirstPendingMutation = record.forget();
+      mFirstPendingMutation = std::move(record);
       mLastPendingMutation = mFirstPendingMutation;
     } else {
       MOZ_ASSERT(mFirstPendingMutation);
-      mLastPendingMutation->mNext = record.forget();
+      mLastPendingMutation->mNext = std::move(record);
       mLastPendingMutation = mLastPendingMutation->mNext;
     }
     ++mPendingMutationCount;
@@ -503,11 +503,11 @@ class nsDOMMutationObserver final : public nsISupports, public nsWrapperCache {
   void ClearPendingRecords() {
     // Break down the pending mutation record list so that cycle collector
     // can delete the objects sooner.
-    RefPtr<nsDOMMutationRecord> current = mFirstPendingMutation.forget();
+    RefPtr<nsDOMMutationRecord> current = std::move(mFirstPendingMutation);
     mLastPendingMutation = nullptr;
     mPendingMutationCount = 0;
     while (current) {
-      current = current->mNext.forget();
+      current = std::move(current->mNext);
     }
   }
 

dom/base/nsDOMNavigationTiming.cpp

@@ -630,11 +630,11 @@ bool mozilla::ipc::IPDLParamTraits<nsDOMNavigationTiming*>::Read(
   }
   timing->mNavigationType = nsDOMNavigationTiming::Type(type);
   if (unloadedURI) {
-    timing->mUnloadedURI = unloadedURI->forget();
+    timing->mUnloadedURI = std::move(*unloadedURI);
   }
   if (loadedURI) {
-    timing->mLoadedURI = loadedURI->forget();
+    timing->mLoadedURI = std::move(*loadedURI);
   }
-  *aResult = timing.forget();
+  *aResult = std::move(timing);
   return true;
 }

dom/base/nsFocusManager.cpp

@@ -903,7 +903,7 @@ nsFocusManager::WindowHidden(mozIDOMWindowProxy* aWindow) {
   // window, or an ancestor of the focused window. Either way, the focus is no
   // longer valid, so it needs to be updated.
 
-  RefPtr<Element> oldFocusedElement = mFocusedElement.forget();
+  RefPtr<Element> oldFocusedElement = std::move(mFocusedElement);
 
   nsCOMPtr<nsIDocShell> focusedDocShell = mFocusedWindow->GetDocShell();
   RefPtr<PresShell> presShell = focusedDocShell->GetPresShell();

dom/base/nsGlobalWindowInner.cpp

@@ -5497,7 +5497,7 @@ RefPtr<ServiceWorker> nsGlobalWindowInner::GetOrCreateServiceWorker(
       return;
     }
 
-    ref = sw.forget();
+    ref = std::move(sw);
     *aDoneOut = true;
   });
 
@@ -5505,7 +5505,7 @@ RefPtr<ServiceWorker> nsGlobalWindowInner::GetOrCreateServiceWorker(
     ref = ServiceWorker::Create(this, aDescriptor);
   }
 
-  return ref.forget();
+  return ref;
 }
 
 RefPtr<mozilla::dom::ServiceWorkerRegistration>
@@ -5520,10 +5520,10 @@ nsGlobalWindowInner::GetServiceWorkerRegistration(
       return;
     }
 
-    ref = swr.forget();
+    ref = std::move(swr);
     *aDoneOut = true;
   });
-  return ref.forget();
+  return ref;
 }
 
 RefPtr<ServiceWorkerRegistration>
@@ -5535,7 +5535,7 @@ nsGlobalWindowInner::GetOrCreateServiceWorkerRegistration(
   if (!ref) {
     ref = ServiceWorkerRegistration::CreateForMainThread(this, aDescriptor);
   }
-  return ref.forget();
+  return ref;
 }
 
 nsresult nsGlobalWindowInner::FireDelayedDOMEvents() {
@@ -6876,7 +6876,7 @@ void nsGlobalWindowInner::GetSidebar(OwningExternalOrWindowProxy& aResult,
   RefPtr<BrowsingContext> domWindow =
       GetChildWindow(NS_LITERAL_STRING("sidebar"));
   if (domWindow) {
-    aResult.SetAsWindowProxy() = domWindow.forget();
+    aResult.SetAsWindowProxy() = std::move(domWindow);
     return;
   }
 

dom/base/nsGlobalWindowOuter.cpp

@@ -3218,7 +3218,7 @@ nsPIDOMWindowOuter* nsGlobalWindowOuter::GetSameProcessOpener() {
 
 Nullable<WindowProxyHolder> nsGlobalWindowOuter::GetOpenerWindowOuter() {
   if (RefPtr<BrowsingContext> opener = GetOpenerBrowsingContext()) {
-    return WindowProxyHolder(opener.forget());
+    return WindowProxyHolder(std::move(opener));
   }
   return nullptr;
 }
@@ -5442,7 +5442,7 @@ Nullable<WindowProxyHolder> nsGlobalWindowOuter::OpenOuter(
   if (!bc) {
     return nullptr;
   }
-  return WindowProxyHolder(bc.forget());
+  return WindowProxyHolder(std::move(bc));
 }
 
 nsresult nsGlobalWindowOuter::Open(const nsAString& aUrl,
@@ -5540,7 +5540,7 @@ Nullable<WindowProxyHolder> nsGlobalWindowOuter::OpenDialogOuter(
   if (!dialog) {
     return nullptr;
   }
-  return WindowProxyHolder(dialog.forget());
+  return WindowProxyHolder(std::move(dialog));
 }
 
 WindowProxyHolder nsGlobalWindowOuter::GetFramesOuter() {

dom/base/nsINode.cpp

@@ -1628,10 +1628,10 @@ void nsINode::DisconnectChild(nsIContent* aKid) {
   aKid->mPreviousOrLastSibling = nullptr;
 
   if (previousSibling) {
-    previousSibling->mNextSibling = aKid->mNextSibling.forget();
+    previousSibling->mNextSibling = std::move(aKid->mNextSibling);
   } else {
     // aKid is the first child in the list
-    mFirstChild = aKid->mNextSibling.forget();
+    mFirstChild = std::move(aKid->mNextSibling);
   }
 
   --mChildCount;

dom/bindings/BindingUtils.cpp

@@ -3369,7 +3369,7 @@ nsresult UnwrapWindowProxyArg(JSContext* cx, JS::Handle<JSObject*> src,
 
   nsCOMPtr<nsPIDOMWindowOuter> outer = inner->GetOuterWindow();
   RefPtr<BrowsingContext> bc = outer ? outer->GetBrowsingContext() : nullptr;
-  ppArg = bc.forget();
+  ppArg = std::move(bc);
   return NS_OK;
 }
 

dom/cache/CacheStreamControlChild.cpp

@@ -115,7 +115,7 @@ void CacheStreamControlChild::OpenStream(const nsID& aId,
   SendOpenStream(aId)->Then(
       GetCurrentThreadSerialEventTarget(), __func__,
       [aResolver, holder](RefPtr<nsIInputStream>&& aOptionalStream) {
-        aResolver(nsCOMPtr<nsIInputStream>(aOptionalStream.forget()));
+        aResolver(nsCOMPtr<nsIInputStream>(std::move(aOptionalStream)));
       },
       [aResolver, holder](ResponseRejectReason&& aReason) {
         aResolver(nullptr);

dom/canvas/CanvasRenderingContext2D.cpp

@@ -1337,8 +1337,8 @@ bool CanvasRenderingContext2D::EnsureTarget(const gfx::Rect* aCoveredRect,
     newTarget->ClearRect(canvasRect);
   }
 
-  mTarget = newTarget.forget();
-  mBufferProvider = newProvider.forget();
+  mTarget = std::move(newTarget);
+  mBufferProvider = std::move(newProvider);
 
   RegisterAllocation();
 
@@ -4366,8 +4366,8 @@ CanvasRenderingContext2D::CachedSurfaceFromElement(Element* aElement) {
   }
 
   res.mSize = res.mIntrinsicSize = res.mSourceSurface->GetSize();
-  res.mPrincipal = principal.forget();
-  res.mImageRequest = imgRequest.forget();
+  res.mPrincipal = std::move(principal);
+  res.mImageRequest = std::move(imgRequest);
   res.mIsWriteOnly = CheckWriteOnlySecurity(res.mCORSUsed, res.mPrincipal,
                                             res.mHadCrossOriginRedirects);
 

dom/canvas/CanvasRenderingContextHelper.cpp

@@ -41,7 +41,7 @@ void CanvasRenderingContextHelper::ToBlob(
         blob = Blob::Create(mGlobal, blobImpl);
       }
 
-      RefPtr<BlobCallback> callback(mBlobCallback.forget());
+      RefPtr<BlobCallback> callback(std::move(mBlobCallback));
       ErrorResult rv;
 
       callback->Call(blob, rv);
@@ -173,7 +173,7 @@ already_AddRefed<nsISupports> CanvasRenderingContextHelper::GetContext(
       return nullptr;
     }
 
-    mCurrentContext = context.forget();
+    mCurrentContext = std::move(context);
     mCurrentContextType = contextType;
 
     nsresult rv = UpdateContext(aCx, aContextOptions, aRv);

dom/clients/manager/ClientHandle.cpp

@@ -121,7 +121,7 @@ RefPtr<GenericErrorResultPromise> ClientHandle::Control(
         outerPromise->Reject(aResult.get_CopyableErrorResult(), __func__);
       });
 
-  return outerPromise.forget();
+  return outerPromise;
 }
 
 RefPtr<ClientStatePromise> ClientHandle::Focus(CallerType aCallerType) {
@@ -138,7 +138,7 @@ RefPtr<ClientStatePromise> ClientHandle::Focus(CallerType aCallerType) {
         outerPromise->Reject(aResult.get_CopyableErrorResult(), __func__);
       });
 
-  return outerPromise.forget();
+  return outerPromise;
 }
 
 RefPtr<GenericErrorResultPromise> ClientHandle::PostMessage(
@@ -171,7 +171,7 @@ RefPtr<GenericErrorResultPromise> ClientHandle::PostMessage(
         outerPromise->Reject(aResult.get_CopyableErrorResult(), __func__);
       });
 
-  return outerPromise.forget();
+  return outerPromise;
 }
 
 RefPtr<GenericPromise> ClientHandle::OnDetach() {

dom/clients/manager/ClientManager.cpp

@@ -195,7 +195,7 @@ RefPtr<ClientOpPromise> ClientManager::StartOp(
         promise->Reject(rv, __func__);
       });
 
-  return promise.forget();
+  return promise;
 }
 
 // static

dom/clients/manager/ClientManagerService.cpp

@@ -103,7 +103,7 @@ RefPtr<GenericPromise> OnShutdown() {
 
   MOZ_ALWAYS_SUCCEEDS(SystemGroup::Dispatch(TaskCategory::Other, r.forget()));
 
-  return ref.forget();
+  return ref;
 }
 
 }  // anonymous namespace
@@ -310,7 +310,7 @@ RefPtr<ClientOpPromise> ClientManagerService::Navigate(
     promise->Reject(rv, __func__);
   }
 
-  return promise.forget();
+  return promise;
 }
 
 namespace {
@@ -472,7 +472,7 @@ RefPtr<ClientOpPromise> ClaimOnMainThread(
 
   MOZ_ALWAYS_SUCCEEDS(SystemGroup::Dispatch(TaskCategory::Other, r.forget()));
 
-  return promise.forget();
+  return promise;
 }
 
 }  // anonymous namespace
@@ -657,7 +657,7 @@ RefPtr<ClientOpPromise> ClientManagerService::OpenWindow(
       new OpenWindowRunnable(promise, aArgs, std::move(aSourceProcess));
   MOZ_ALWAYS_SUCCEEDS(SystemGroup::Dispatch(TaskCategory::Other, r.forget()));
 
-  return promise.forget();
+  return promise;
 }
 
 bool ClientManagerService::HasWindow(

dom/clients/manager/ClientNavigateOpChild.cpp

@@ -284,7 +284,7 @@ RefPtr<ClientOpPromise> ClientNavigateOpChild::DoNavigate(
     // XXXbz Can we throw something better here?
     result.Throw(rv);
     promise->Reject(result, __func__);
-    return promise.forget();
+    return promise;
   }
 
   return promise->Then(

dom/clients/manager/ClientOpenWindowUtils.cpp

@@ -460,13 +460,13 @@ RefPtr<ClientOpPromise> ClientOpenWindowInCurrentProcess(
 
   if (NS_WARN_IF(rv.Failed())) {
     promise->Reject(rv, __func__);
-    return promise.forget();
+    return promise;
   }
 
   MOZ_DIAGNOSTIC_ASSERT(outerWindow);
   WaitForLoad(aArgs, outerWindow, promise);
 
-  return promise.forget();
+  return promise;
 }
 
 }  // namespace dom

dom/clients/manager/ClientSource.cpp

@@ -650,7 +650,7 @@ RefPtr<ClientOpPromise> ClientSource::Claim(const ClientClaimArgs& aArgs) {
           })
       ->Track(*holder);
 
-  return outerPromise.forget();
+  return outerPromise;
 }
 
 RefPtr<ClientOpPromise> ClientSource::GetInfoAndState(

dom/clients/manager/ClientSourceParent.cpp

@@ -289,7 +289,7 @@ RefPtr<ClientOpPromise> ClientSourceParent::StartOp(
       new ClientSourceOpParent(std::move(aArgs), promise);
   Unused << SendPClientSourceOpConstructor(actor, actor->Args());
 
-  return promise.forget();
+  return promise;
 }
 
 }  // namespace dom

dom/events/AsyncEventDispatcher.cpp

@@ -27,7 +27,7 @@ AsyncEventDispatcher::AsyncEventDispatcher(EventTarget* aTarget,
   MOZ_ASSERT(mTarget);
   RefPtr<Event> event =
       EventDispatcher::CreateEvent(aTarget, nullptr, &aEvent, EmptyString());
-  mEvent = event.forget();
+  mEvent = std::move(event);
   mEventType.SetIsVoid(true);
   NS_ASSERTION(mEvent, "Should never fail to create an event");
   mEvent->DuplicatePrivateData();

dom/events/EventListenerManager.h

@@ -209,7 +209,7 @@ class EventListenerManager final : public EventListenerManagerBase {
 
     Listener(Listener&& aOther)
         : mListener(std::move(aOther.mListener)),
-          mTypeAtom(aOther.mTypeAtom.forget()),
+          mTypeAtom(std::move(aOther.mTypeAtom)),
           mEventMessage(aOther.mEventMessage),
           mListenerType(aOther.mListenerType),
           mListenerIsHandler(aOther.mListenerIsHandler),

dom/events/EventStateManager.cpp

@@ -3996,7 +3996,7 @@ void EventStateManager::UpdateCursor(nsPresContext* aPresContext,
       return;
     }
     cursor = framecursor->mCursor;
-    container = customCursor.mContainer.forget();
+    container = std::move(customCursor.mContainer);
     hotspot = Some(customCursor.mHotspot);
   }
 

dom/events/IMEContentObserver.cpp

@@ -2079,7 +2079,7 @@ void IMEContentObserver::DocumentObserver::Observe(Document* aDocument) {
 
   StopObserving();
 
-  mDocument = newDocument.forget();
+  mDocument = std::move(newDocument);
   mDocument->AddObserver(this);
 }
 
@@ -2089,10 +2089,10 @@ void IMEContentObserver::DocumentObserver::StopObserving() {
   }
 
   // Grab IMEContentObserver which could be destroyed during method calls.
-  RefPtr<IMEContentObserver> observer = mIMEContentObserver.forget();
+  RefPtr<IMEContentObserver> observer = std::move(mIMEContentObserver);
 
   // Stop observing the document first.
-  RefPtr<Document> document = mDocument.forget();
+  RefPtr<Document> document = std::move(mDocument);
   document->RemoveObserver(this);
 
   // Notify IMEContentObserver of ending of document updates if this already

dom/fetch/FetchDriver.cpp

@@ -279,7 +279,7 @@ AlternativeDataStreamListener::OnStopRequest(nsIRequest* aRequest,
 
   // Alternative data loading is going to finish, breaking the reference cycle
   // here by taking the ownership to a loacl variable.
-  RefPtr<FetchDriver> fetchDriver = mFetchDriver.forget();
+  RefPtr<FetchDriver> fetchDriver = std::move(mFetchDriver);
 
   if (mStatus == AlternativeDataStreamListener::CANCELED) {
     // do nothing
@@ -1206,7 +1206,7 @@ FetchDriver::OnStopRequest(nsIRequest* aRequest, nsresult aStatusCode) {
 
   // main data loading is going to finish, breaking the reference cycle.
   RefPtr<AlternativeDataStreamListener> altDataListener =
-      mAltDataListener.forget();
+      std::move(mAltDataListener);
 
   // We need to check mObserver, which is nulled by FailWithNetworkError(),
   // because in the case of "error" redirect mode, aStatusCode may be NS_OK but

dom/fetch/FetchStreamReader.cpp

@@ -82,7 +82,7 @@ nsresult FetchStreamReader::Create(JSContext* aCx, nsIGlobalObject* aGlobal,
 
     // These 2 objects create a ref-cycle here that is broken when the stream is
     // closed or the worker shutsdown.
-    streamReader->mWorkerRef = workerRef.forget();
+    streamReader->mWorkerRef = std::move(workerRef);
   }
 
   pipeIn.forget(aInputStream);

dom/fetch/FetchUtil.cpp

@@ -273,7 +273,7 @@ class WorkerStreamOwner final {
   struct Destroyer final : CancelableRunnable {
     RefPtr<WorkerStreamOwner> mDoomed;
 
-    explicit Destroyer(already_AddRefed<WorkerStreamOwner>&& aDoomed)
+    explicit Destroyer(RefPtr<WorkerStreamOwner>&& aDoomed)
         : CancelableRunnable("WorkerStreamOwner::Destroyer"),
           mDoomed(std::move(aDoomed)) {}
 
@@ -332,7 +332,8 @@ class JSStreamConsumer final : public nsIInputStreamCallback {
       destroyer = new WindowStreamOwner::Destroyer(mWindowStreamOwner.forget());
     } else {
       MOZ_DIAGNOSTIC_ASSERT(mWorkerStreamOwner);
-      destroyer = new WorkerStreamOwner::Destroyer(mWorkerStreamOwner.forget());
+      destroyer =
+          new WorkerStreamOwner::Destroyer(std::move(mWorkerStreamOwner));
     }
 
     MOZ_ALWAYS_SUCCEEDS(mOwningEventTarget->Dispatch(destroyer.forget()));

dom/file/StreamBlobImpl.cpp

@@ -77,7 +77,7 @@ void StreamBlobImpl::CreateInputStream(nsIInputStream** aStream,
   }
 
   if (replacementStream) {
-    mInputStream = replacementStream.forget();
+    mInputStream = std::move(replacementStream);
   }
 
   nsCOMPtr<nsIInputStream> wrappedStream =

dom/filehandle/ActorsParent.cpp

@@ -1090,7 +1090,7 @@ void BackgroundMutableFileParentBase::Invalidate() {
 
       if (count) {
         for (uint32_t index = 0; index < count; index++) {
-          RefPtr<FileHandle> fileHandle = fileHandles[index].forget();
+          RefPtr<FileHandle> fileHandle = std::move(fileHandles[index]);
           MOZ_ASSERT(fileHandle);
 
           fileHandle->Invalidate();

dom/html/HTMLFormElement.cpp

@@ -1674,7 +1674,7 @@ nsresult HTMLFormElement::GetActionURL(nsIURI** aActionURL,
     nsCOMPtr<nsIURI> upgradedActionURL;
     rv = NS_GetSecureUpgradedURI(actionURL, getter_AddRefs(upgradedActionURL));
     NS_ENSURE_SUCCESS(rv, rv);
-    actionURL = upgradedActionURL.forget();
+    actionURL = std::move(upgradedActionURL);
 
     // let's log a message to the console that we are upgrading a request
     nsAutoCString scheme;

dom/html/HTMLMediaElement.cpp

@@ -3050,7 +3050,7 @@ MediaResult HTMLMediaElement::LoadResource() {
   RefPtr<ChannelLoader> loader = new ChannelLoader;
   nsresult rv = loader->Load(this);
   if (NS_SUCCEEDED(rv)) {
-    mChannelLoader = loader.forget();
+    mChannelLoader = std::move(loader);
   }
   return MediaResult(rv, "Failed to load channel");
 }

dom/html/HTMLSlotElement.cpp

@@ -15,8 +15,7 @@
 nsGenericHTMLElement* NS_NewHTMLSlotElement(
     already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
     mozilla::dom::FromParser aFromParser) {
-  RefPtr<mozilla::dom::NodeInfo> nodeInfo(std::move(aNodeInfo));
-  return new mozilla::dom::HTMLSlotElement(nodeInfo.forget());
+  return new mozilla::dom::HTMLSlotElement(std::move(aNodeInfo));
 }
 
 namespace mozilla {

dom/html/nsHTMLDocument.cpp

@@ -525,7 +525,7 @@ nsresult nsHTMLDocument::StartDocumentLoad(const char* aCommand,
     docShell->GetContentViewer(getter_AddRefs(cv));
   }
   if (!cv) {
-    cv = parentContentViewer.forget();
+    cv = std::move(parentContentViewer);
   }
 
   nsAutoCString urlSpec;

dom/indexedDB/ActorsParent.cpp

@@ -22498,7 +22498,7 @@ TransactionDatabaseOperationBase::TransactionDatabaseOperationBase(
     RefPtr<TransactionBase> aTransaction)
     : DatabaseOperationBase(aTransaction->GetLoggingInfo()->Id(),
                             aTransaction->GetLoggingInfo()->NextRequestSN()),
-      mTransaction(aTransaction.forget()),
+      mTransaction(std::move(aTransaction)),
       mTransactionIsAborted((*mTransaction)->IsAborted()),
       mTransactionLoggingSerialNumber((*mTransaction)->LoggingSerialNumber()) {
   MOZ_ASSERT(LoggingSerialNumber());
@@ -22508,7 +22508,7 @@ TransactionDatabaseOperationBase::TransactionDatabaseOperationBase(
     RefPtr<TransactionBase> aTransaction, uint64_t aLoggingSerialNumber)
     : DatabaseOperationBase(aTransaction->GetLoggingInfo()->Id(),
                             aLoggingSerialNumber),
-      mTransaction(aTransaction.forget()),
+      mTransaction(std::move(aTransaction)),
       mTransactionIsAborted((*mTransaction)->IsAborted()),
       mTransactionLoggingSerialNumber((*mTransaction)->LoggingSerialNumber()) {}
 

dom/ipc/BrowserBridgeParent.cpp

@@ -92,7 +92,7 @@ nsresult BrowserBridgeParent::InitWithProcess(
   }
 
   // Set our BrowserParent object to the newly created browser.
-  mBrowserParent = browserParent.forget();
+  mBrowserParent = std::move(browserParent);
   mBrowserParent->SetOwnerElement(Manager()->GetOwnerElement());
   mBrowserParent->InitRendering();
 

dom/ipc/BrowserChild.cpp

@@ -3825,7 +3825,7 @@ NS_IMETHODIMP BrowserChild::OnSecurityChange(nsIWebProgress* aWebProgress,
     }
 
     securityChangeData.emplace();
-    securityChangeData->securityInfo() = securityInfo.forget();
+    securityChangeData->securityInfo() = ToRefPtr(std::move(securityInfo));
     securityChangeData->isSecureContext() = isSecureContext;
   }
 

dom/ipc/CSPMessageUtils.cpp

@@ -52,7 +52,7 @@ bool ParamTraits<nsIContentSecurityPolicy*>::Read(
   nsCOMPtr<nsIContentSecurityPolicy> csp = do_QueryInterface(iSupports);
   NS_ENSURE_TRUE(csp, false);
 
-  *aResult = csp.forget();
+  *aResult = ToRefPtr(std::move(csp));
   return true;
 }
 

dom/ipc/ClonedErrorHolder.cpp

@@ -80,7 +80,7 @@ void ClonedErrorHolder::Init(JSContext* aCx, JS::Handle<JSObject*> aError,
     if (NS_SUCCEEDED(UNWRAP_OBJECT(DOMException, aError, domExn))) {
       mType = Type::DOMException;
       mCode = domExn->Code();
-      exn = domExn.forget();
+      exn = std::move(domExn);
     } else if (NS_SUCCEEDED(UNWRAP_OBJECT(Exception, aError, exn))) {
       mType = Type::Exception;
     } else {

dom/ipc/PermissionMessageUtils.h

@@ -55,7 +55,7 @@ struct IPDLParamTraits<nsIPrincipal*> {
     if (!Read(aMsg, aIter, aActor, &result)) {
       return false;
     }
-    *aResult = result.forget();
+    *aResult = std::move(result);
     return true;
   }
 };

dom/ipc/PropertyBagUtils.cpp

@@ -202,7 +202,7 @@ bool IPDLParamTraits<nsIVariant*>::Read(const Message* aMsg,
       MOZ_CRASH("Non handled variant type, patch welcome");
       return false;
   }
-  *aResult = variant.forget();
+  *aResult = std::move(variant);
   return true;
 }
 
@@ -237,11 +237,11 @@ bool IPDLParamTraits<nsIPropertyBag2*>::Read(const Message* aMsg,
   auto properties = MakeRefPtr<nsHashPropertyBag>();
 
   for (auto& entry : bag) {
-    nsCOMPtr<nsIVariant> variant = entry.value().forget();
+    nsCOMPtr<nsIVariant> variant = std::move(entry.value());
     MOZ_ALWAYS_SUCCEEDS(
         properties->SetProperty(std::move(entry.name()), variant));
   }
-  *aResult = properties.forget();
+  *aResult = std::move(properties);
   return true;
 }
 

dom/ipc/ReferrerInfoUtils.cpp

@@ -45,7 +45,7 @@ bool ParamTraits<nsIReferrerInfo*>::Read(const Message* aMsg,
   NS_ENSURE_SUCCESS(rv, false);
   nsCOMPtr<nsIReferrerInfo> referrerInfo = do_QueryInterface(iSupports);
   NS_ENSURE_TRUE(referrerInfo, false);
-  *aResult = referrerInfo.forget();
+  *aResult = ToRefPtr(std::move(referrerInfo));
   return true;
 }
 

dom/localstorage/ActorsParent.cpp

@@ -1718,10 +1718,9 @@ class Datastore final
   // Created by PrepareDatastoreOp.
   Datastore(const nsACString& aGroup, const nsACString& aOrigin,
             uint32_t aPrivateBrowsingId, int64_t aUsage, int64_t aSizeOfKeys,
-            int64_t aSizeOfItems,
-            already_AddRefed<DirectoryLock>&& aDirectoryLock,
-            already_AddRefed<Connection>&& aConnection,
-            already_AddRefed<QuotaObject>&& aQuotaObject,
+            int64_t aSizeOfItems, RefPtr<DirectoryLock>&& aDirectoryLock,
+            RefPtr<Connection>&& aConnection,
+            RefPtr<QuotaObject>&& aQuotaObject,
             nsDataHashtable<nsStringHashKey, LSValue>& aValues,
             nsTArray<LSItemInfo>& aOrderedItems);
 
@@ -4768,9 +4767,9 @@ void ConnectionThread::Shutdown() {
 Datastore::Datastore(const nsACString& aGroup, const nsACString& aOrigin,
                      uint32_t aPrivateBrowsingId, int64_t aUsage,
                      int64_t aSizeOfKeys, int64_t aSizeOfItems,
-                     already_AddRefed<DirectoryLock>&& aDirectoryLock,
-                     already_AddRefed<Connection>&& aConnection,
-                     already_AddRefed<QuotaObject>&& aQuotaObject,
+                     RefPtr<DirectoryLock>&& aDirectoryLock,
+                     RefPtr<Connection>&& aConnection,
+                     RefPtr<QuotaObject>&& aQuotaObject,
                      nsDataHashtable<nsStringHashKey, LSValue>& aValues,
                      nsTArray<LSItemInfo>& aOrderedItems)
     : mDirectoryLock(std::move(aDirectoryLock)),
@@ -7198,7 +7197,7 @@ nsresult PrepareDatastoreOp::OpenDirectory() {
   MOZ_ASSERT(pendingDirectoryLock);
 
   if (mNestedState == NestedState::DirectoryOpenPending) {
-    mPendingDirectoryLock = pendingDirectoryLock.forget();
+    mPendingDirectoryLock = std::move(pendingDirectoryLock);
   }
 
   mRequestedDirectoryLock = true;
@@ -7868,10 +7867,10 @@ void PrepareDatastoreOp::GetResponse(LSRequestResponse& aResponse) {
       }
     }
 
-    mDatastore = new Datastore(mGroup, mOrigin, mPrivateBrowsingId, mUsage,
-                               mSizeOfKeys, mSizeOfItems,
-                               mDirectoryLock.forget(), mConnection.forget(),
-                               quotaObject.forget(), mValues, mOrderedItems);
+    mDatastore = new Datastore(
+        mGroup, mOrigin, mPrivateBrowsingId, mUsage, mSizeOfKeys, mSizeOfItems,
+        std::move(mDirectoryLock), std::move(mConnection),
+        std::move(quotaObject), mValues, mOrderedItems);
 
     mDatastore->NoteLivePrepareDatastoreOp(this);
 

dom/media/AudioSegment.h

@@ -397,7 +397,7 @@ class AudioSegment : public MediaSegmentBase<AudioSegment, AudioChunk> {
   // in the segment.
   AudioChunk* AppendAndConsumeChunk(AudioChunk* aChunk) {
     AudioChunk* chunk = AppendChunk(aChunk->mDuration);
-    chunk->mBuffer = aChunk->mBuffer.forget();
+    chunk->mBuffer = std::move(aChunk->mBuffer);
     chunk->mChannelData.SwapElements(aChunk->mChannelData);
 
     MOZ_ASSERT(chunk->mBuffer || aChunk->mChannelData.IsEmpty(),

dom/media/CanvasCaptureMediaStream.cpp

@@ -46,15 +46,15 @@ void OutputStreamDriver::EndTrack() {
   }
 }
 
-void OutputStreamDriver::SetImage(const RefPtr<layers::Image>& aImage,
+void OutputStreamDriver::SetImage(RefPtr<layers::Image>&& aImage,
                                   const TimeStamp& aTime) {
   MOZ_ASSERT(NS_IsMainThread());
 
   TRACE_COMMENT("SourceMediaTrack %p", mSourceStream.get());
 
   VideoSegment segment;
-  segment.AppendFrame(do_AddRef(aImage), aImage->GetSize(), mPrincipalHandle,
-                      false, aTime);
+  const auto size = aImage->GetSize();
+  segment.AppendFrame(aImage.forget(), size, mPrincipalHandle, false, aTime);
   mSourceStream->AppendData(&segment);
 }
 
@@ -92,7 +92,7 @@ class TimerDriver : public OutputStreamDriver {
     }
 
     mFrameCaptureRequested = false;
-    SetImage(image.forget(), aTime);
+    SetImage(std::move(image), aTime);
   }
 
   void Forget() override {
@@ -126,7 +126,7 @@ class AutoDriver : public OutputStreamDriver {
     // after something changed.
 
     RefPtr<Image> image = aImage;
-    SetImage(image.forget(), aTime);
+    SetImage(std::move(image), aTime);
   }
 
  protected:

dom/media/CanvasCaptureMediaStream.h

@@ -70,7 +70,7 @@ class OutputStreamDriver : public FrameCaptureListener {
    * Sub classes can SetImage() to update the image being appended to the
    * output stream. It will be appended on the next NotifyPull from MTG.
    */
-  void SetImage(const RefPtr<layers::Image>& aImage, const TimeStamp& aTime);
+  void SetImage(RefPtr<layers::Image>&& aImage, const TimeStamp& aTime);
 
   /*
    * Ends the track in mSourceStream when we know there won't be any more images

dom/media/MediaCache.cpp

@@ -774,7 +774,7 @@ RefPtr<MediaCache> MediaCache::GetMediaCache(int64_t aContentLength) {
       NS_WARNING("Failed to create a thread for MediaCache.");
       return nullptr;
     }
-    sThread = thread.forget();
+    sThread = ToRefPtr(std::move(thread));
 
     static struct ClearThread {
       // Called during shutdown to clear sThread.

dom/media/MediaDecoderStateMachine.cpp

@@ -1699,7 +1699,7 @@ class MediaDecoderStateMachine::VideoOnlySeekingState
     // changes.
     mMaster->mOnPlaybackEvent.Notify(MediaPlaybackEvent::VideoOnlySeekBegin);
 
-    return p.forget();
+    return p;
   }
 
   void Exit() override {
@@ -3767,7 +3767,7 @@ RefPtr<GenericPromise> MediaDecoderStateMachine::RequestDebugInfo(
       AbstractThread::TailDispatch);
   MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
   Unused << rv;
-  return p.forget();
+  return p;
 }
 
 class VideoQueueMemoryFunctor : public nsDequeFunctor {

dom/media/MediaFormatReader.cpp

@@ -266,7 +266,7 @@ void MediaFormatReader::DecoderFactory::RunStage(Data& aData) {
               mOwner->OwnerThread(), __func__,
               [this, &aData](RefPtr<Token> aToken) {
                 aData.mTokenRequest.Complete();
-                aData.mToken = aToken.forget();
+                aData.mToken = std::move(aToken);
                 aData.mStage = Stage::CreateDecoder;
                 RunStage(aData);
               },
@@ -408,7 +408,7 @@ void MediaFormatReader::DecoderFactory::DoInitDecoder(Data& aData) {
             aData.mInitRequest.Complete();
             aData.mStage = Stage::None;
             MutexAutoLock lock(ownerData.mMutex);
-            ownerData.mDecoder = aData.mDecoder.forget();
+            ownerData.mDecoder = std::move(aData.mDecoder);
             ownerData.mDescription = ownerData.mDecoder->GetDescriptionName();
             DDLOGEX2("MediaFormatReader::DecoderFactory", this,
                      DDLogCategory::Log, "decoder_initialized", DDNoValue{});
@@ -456,7 +456,7 @@ class MediaFormatReader::DemuxerProxy {
   ~DemuxerProxy() { MOZ_COUNT_DTOR(DemuxerProxy); }
 
   RefPtr<ShutdownPromise> Shutdown() {
-    RefPtr<Data> data = mData.forget();
+    RefPtr<Data> data = std::move(mData);
     return InvokeAsync(mTaskQueue, __func__, [data]() {
       // We need to clear our reference to the demuxer now. So that in the event
       // the init promise wasn't resolved, such as what can happen with the
@@ -676,7 +676,7 @@ class MediaFormatReader::DemuxerProxy::Wrapper : public MediaTrackDemuxer {
   friend class DemuxerProxy;
 
   ~Wrapper() {
-    RefPtr<MediaTrackDemuxer> trackDemuxer = mTrackDemuxer.forget();
+    RefPtr<MediaTrackDemuxer> trackDemuxer = std::move(mTrackDemuxer);
     nsresult rv = mTaskQueue->Dispatch(NS_NewRunnableFunction(
         "MediaFormatReader::DemuxerProxy::Wrapper::~Wrapper",
         [trackDemuxer]() { trackDemuxer->BreakCycles(); }));

dom/media/MediaRecorder.cpp

@@ -1970,7 +1970,7 @@ void MediaRecorder::NotifyError(nsresult aRv) {
                               "mSecurityDomException was not initialized"));
         mSecurityDomException = DOMException::Create(NS_ERROR_DOM_SECURITY_ERR);
       }
-      init.mError = mSecurityDomException.forget();
+      init.mError = std::move(mSecurityDomException);
       break;
     default:
       if (!mUnknownDomException) {
@@ -1981,7 +1981,7 @@ void MediaRecorder::NotifyError(nsresult aRv) {
       LOG(LogLevel::Debug, ("MediaRecorder.NotifyError: "
                             "mUnknownDomException being fired for aRv: %X",
                             uint32_t(aRv)));
-      init.mError = mUnknownDomException.forget();
+      init.mError = std::move(mUnknownDomException);
   }
 
   RefPtr<MediaRecorderErrorEvent> event = MediaRecorderErrorEvent::Constructor(

dom/media/MediaShutdownManager.cpp

@@ -59,7 +59,7 @@ static nsCOMPtr<nsIAsyncShutdownClient> GetShutdownBarrier() {
   }
   MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
   MOZ_RELEASE_ASSERT(barrier);
-  return barrier.forget();
+  return barrier;
 }
 
 void MediaShutdownManager::InitStatics() {

dom/media/VideoSegment.cpp

@@ -36,7 +36,7 @@ void VideoFrame::SetNull() {
 }
 
 void VideoFrame::TakeFrom(VideoFrame* aFrame) {
-  mImage = aFrame->mImage.forget();
+  mImage = std::move(aFrame->mImage);
   mIntrinsicSize = aFrame->mIntrinsicSize;
   mForceBlack = aFrame->GetForceBlack();
   mPrincipalHandle = aFrame->mPrincipalHandle;

dom/media/VideoUtils.h

@@ -292,7 +292,7 @@ RefPtr<GenericPromise> InvokeUntil(Work aWork, Condition aCondition) {
   };
 
   Helper::Iteration(p, aWork, aCondition);
-  return p.forget();
+  return p;
 }
 
 // Simple timer to run a runnable after a timeout.

dom/media/gmp/CDMStorageIdProvider.cpp

@@ -32,7 +32,6 @@ nsCString CDMStorageIdProvider::ComputeStorageId(const nsCString& aOriginSalt) {
   std::string originSalt(aOriginSalt.BeginReading(), aOriginSalt.Length());
   std::string input =
       machineId + originSalt + CDMStorageIdProvider::kBrowserIdentifier;
-  nsAutoCString storageId;
   nsresult rv;
   nsCOMPtr<nsICryptoHash> hasher =
       do_CreateInstance("@mozilla.org/security/hash;1", &rv);
@@ -63,6 +62,7 @@ nsCString CDMStorageIdProvider::ComputeStorageId(const nsCString& aOriginSalt) {
     return EmptyCString();
   }
 
+  nsCString storageId;
   rv = hasher->Finish(false, storageId);
   if (NS_WARN_IF(NS_FAILED(rv))) {
     GMP_LOG_DEBUG(
@@ -71,7 +71,7 @@ nsCString CDMStorageIdProvider::ComputeStorageId(const nsCString& aOriginSalt) {
         static_cast<uint32_t>(rv));
     return EmptyCString();
   }
-  return std::move(storageId);
+  return storageId;
 #endif
 }
 

dom/media/gmp/GMPService.cpp

@@ -68,7 +68,7 @@ class GMPServiceCreateHelper final : public mozilla::Runnable {
           SystemGroup::EventTargetFor(mozilla::TaskCategory::Other),
           createHelper, true);
 
-      service = createHelper->mService.forget();
+      service = std::move(createHelper->mService);
     }
 
     return service.forget();

dom/media/gmp/GMPServiceParent.cpp

@@ -1509,7 +1509,7 @@ static nsCOMPtr<nsIAsyncShutdownClient> GetShutdownBarrier() {
 
   MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
   MOZ_RELEASE_ASSERT(barrier);
-  return barrier.forget();
+  return barrier;
 }
 
 NS_IMETHODIMP

dom/media/ipc/RemoteMediaDataDecoder.cpp

@@ -92,7 +92,7 @@ RefPtr<ShutdownPromise> RemoteMediaDataDecoder::Shutdown() {
         // task queue for the *DecoderChild thread to keep
         // it alive until we send the delete message.
         p->Then(RemoteDecoderManagerChild::GetManagerThread(), __func__,
-                [child = RefPtr<IRemoteDecoderChild>(self->mChild.forget())](
+                [child = std::move(self->mChild)](
                     const ShutdownPromise::ResolveOrRejectValue& aValue) {
                   MOZ_ASSERT(aValue.IsResolve());
                   child->DestroyIPDL();

dom/media/platforms/AllocationPolicy.cpp

@@ -46,7 +46,7 @@ auto AllocPolicyImpl::Alloc() -> RefPtr<Promise> {
   RefPtr<PromisePrivate> p = new PromisePrivate(__func__);
   mPromises.push(p);
   ResolvePromise(mon);
-  return p.forget();
+  return p;
 }
 
 void AllocPolicyImpl::Dealloc() {
@@ -60,7 +60,7 @@ void AllocPolicyImpl::ResolvePromise(ReentrantMonitorAutoEnter& aProofOfLock) {
 
   if (mDecoderLimit > 0 && !mPromises.empty()) {
     --mDecoderLimit;
-    RefPtr<PromisePrivate> p = mPromises.front().forget();
+    RefPtr<PromisePrivate> p = std::move(mPromises.front());
     mPromises.pop();
     p->Resolve(new AutoDeallocToken(this), __func__);
   }
@@ -69,7 +69,7 @@ void AllocPolicyImpl::ResolvePromise(ReentrantMonitorAutoEnter& aProofOfLock) {
 void AllocPolicyImpl::RejectAll() {
   ReentrantMonitorAutoEnter mon(mMonitor);
   while (!mPromises.empty()) {
-    RefPtr<PromisePrivate> p = mPromises.front().forget();
+    RefPtr<PromisePrivate> p = std::move(mPromises.front());
     mPromises.pop();
     p->Reject(true, __func__);
   }
@@ -137,7 +137,7 @@ auto SingleAllocPolicy::Alloc() -> RefPtr<Promise> {
   return AllocPolicyImpl::Alloc()->Then(
       mOwnerThread, __func__,
       [self](RefPtr<Token> aToken) {
-        RefPtr<Token> localToken = aToken.forget();
+        RefPtr<Token> localToken = std::move(aToken);
         RefPtr<Promise> p = self->mPendingPromise.Ensure(__func__);
         GlobalAllocPolicy::Instance(self->mTrack)
             ->Alloc()
@@ -186,8 +186,8 @@ AllocationWrapper::~AllocationWrapper() {
 }
 
 RefPtr<ShutdownPromise> AllocationWrapper::Shutdown() {
-  RefPtr<MediaDataDecoder> decoder = mDecoder.forget();
-  RefPtr<Token> token = mToken.forget();
+  RefPtr<MediaDataDecoder> decoder = std::move(mDecoder);
+  RefPtr<Token> token = std::move(mToken);
   return decoder->Shutdown()->Then(
       AbstractThread::GetCurrent(), __func__,
       [token]() { return ShutdownPromise::CreateAndResolve(true, __func__); });

dom/media/platforms/PDMFactory.cpp

@@ -294,7 +294,7 @@ already_AddRefed<MediaDataDecoder> PDMFactory::CreateDecoderWithPDM(
       // or there wasn't enough initialization data to do so (such as what can
       // happen with AVC3). Otherwise, there was some problem, for example WMF
       // DLLs were missing.
-      m = h.forget();
+      m = std::move(h);
     } else if (aParams.mError) {
       *aParams.mError = result;
     }

dom/media/platforms/agnostic/eme/EMEDecoderModule.cpp

@@ -253,7 +253,7 @@ class EMEDecryptor : public MediaDataDecoder,
       mIsShutdown = true;
       mSamplesWaitingForKey->BreakCycles();
       mSamplesWaitingForKey = nullptr;
-      RefPtr<MediaDataDecoder> decoder = mDecoder.forget();
+      RefPtr<MediaDataDecoder> decoder = std::move(mDecoder);
       mProxy = nullptr;
       return decoder->Shutdown();
     });

dom/media/platforms/wrappers/MediaChangeMonitor.cpp

@@ -412,7 +412,7 @@ RefPtr<ShutdownPromise> MediaChangeMonitor::Shutdown() {
     if (mShutdownPromise) {
       // We have a shutdown in progress, return that promise instead as we can't
       // shutdown a decoder twice.
-      RefPtr<ShutdownPromise> p = mShutdownPromise.forget();
+      RefPtr<ShutdownPromise> p = std::move(mShutdownPromise);
       return p;
     }
     return ShutdownDecoder();
@@ -424,7 +424,7 @@ RefPtr<ShutdownPromise> MediaChangeMonitor::ShutdownDecoder() {
   return InvokeAsync(mTaskQueue, __func__, [self, this]() {
     mConversionRequired.reset();
     if (mDecoder) {
-      RefPtr<MediaDataDecoder> decoder = mDecoder.forget();
+      RefPtr<MediaDataDecoder> decoder = std::move(mDecoder);
       return decoder->Shutdown();
     }
     return ShutdownPromise::CreateAndResolve(true, __func__);

dom/media/webaudio/AudioBlock.cpp

@@ -158,7 +158,7 @@ void AudioBlock::AllocateChannels(uint32_t aChannelCount) {
   for (uint32_t i = 0; i < aChannelCount; ++i) {
     mChannelData[i] = buffer->ChannelData(i);
   }
-  mBuffer = buffer.forget();
+  mBuffer = std::move(buffer);
   mVolume = 1.0f;
   mBufferFormat = AUDIO_FORMAT_FLOAT32;
 }

dom/media/webaudio/AudioBuffer.cpp

@@ -209,7 +209,7 @@ void AudioBuffer::SetSharedChannels(
   for (uint32_t i = 0; i < channelCount; ++i) {
     mSharedChannels.mChannelData[i] = buffer->GetData(i);
   }
-  mSharedChannels.mBuffer = buffer.forget();
+  mSharedChannels.mBuffer = std::move(buffer);
   mSharedChannels.mBufferFormat = AUDIO_FORMAT_FLOAT32;
 }
 

dom/media/webaudio/AudioNode.cpp

@@ -168,7 +168,7 @@ void AudioNode::DisconnectFromGraph() {
 
   while (!mOutputNodes.IsEmpty()) {
     size_t i = mOutputNodes.Length() - 1;
-    RefPtr<AudioNode> output = mOutputNodes[i].forget();
+    RefPtr<AudioNode> output = std::move(mOutputNodes[i]);
     mOutputNodes.RemoveElementAt(i);
     size_t inputIndex = FindIndexOfNode(output->mInputNodes, this);
     // It doesn't matter which one we remove, since we're going to remove all
@@ -180,7 +180,7 @@ void AudioNode::DisconnectFromGraph() {
 
   while (!mOutputParams.IsEmpty()) {
     size_t i = mOutputParams.Length() - 1;
-    RefPtr<AudioParam> output = mOutputParams[i].forget();
+    RefPtr<AudioParam> output = std::move(mOutputParams[i]);
     mOutputParams.RemoveElementAt(i);
     size_t inputIndex = FindIndexOfNode(output->InputNodes(), this);
     // It doesn't matter which one we remove, since we're going to remove all
@@ -336,7 +336,7 @@ bool AudioNode::DisconnectFromOutputIfConnected<AudioNode>(
   // Remove one instance of 'dest' from mOutputNodes. There could be
   // others, and it's not correct to remove them all since some of them
   // could be for different output ports.
-  RefPtr<AudioNode> output = mOutputNodes[aOutputNodeIndex].forget();
+  RefPtr<AudioNode> output = std::move(mOutputNodes[aOutputNodeIndex]);
   mOutputNodes.RemoveElementAt(aOutputNodeIndex);
   // Destroying the InputNode here sends a message to the graph thread
   // to disconnect the tracks, which should be sent before the

dom/media/webaudio/MediaBufferDecoder.cpp

@@ -504,7 +504,7 @@ void MediaDecodeTask::FinishDecode() {
     data += resampledFrames;
   }
 #endif
-  mDecodeJob.mBuffer.mBuffer = buffer.forget();
+  mDecodeJob.mBuffer.mBuffer = std::move(buffer);
   mDecodeJob.mBuffer.mVolume = 1.0f;
   mDecodeJob.mBuffer.mBufferFormat = AUDIO_OUTPUT_FORMAT;
 

dom/media/webm/NesteggPacketHolder.h

@@ -114,7 +114,7 @@ class WebMPacketQueue {
   }
 
   already_AddRefed<NesteggPacketHolder> PopFront() {
-    RefPtr<NesteggPacketHolder> result = mQueue.front().forget();
+    RefPtr<NesteggPacketHolder> result = std::move(mQueue.front());
     mQueue.pop_front();
     return result.forget();
   }

dom/media/webm/WebMDemuxer.h

@@ -47,13 +47,13 @@ class MediaRawDataQueue {
   }
 
   already_AddRefed<MediaRawData> PopFront() {
-    RefPtr<MediaRawData> result = mQueue.front().forget();
+    RefPtr<MediaRawData> result = std::move(mQueue.front());
     mQueue.pop_front();
     return result.forget();
   }
 
   already_AddRefed<MediaRawData> Pop() {
-    RefPtr<MediaRawData> result = mQueue.back().forget();
+    RefPtr<MediaRawData> result = std::move(mQueue.back());
     mQueue.pop_back();
     return result.forget();
   }

dom/midi/MIDIAccessManager.cpp

@@ -94,7 +94,7 @@ bool MIDIAccessManager::AddObserver(Observer<MIDIPortList>* aObserver) {
       return false;
     }
     MOZ_ASSERT(constructedMgr == mgr);
-    mChild = mgr.forget();
+    mChild = std::move(mgr);
     // Add a ref to mChild here, that will be deref'd by
     // BackgroundChildImpl::DeallocPMIDIManagerChild on IPC cleanup.
     mChild->SetActorAlive();

dom/notification/Notification.cpp

@@ -1717,7 +1717,7 @@ class WorkerGetCallback final : public ScopeCheckingGetCallback {
     AssertIsOnMainThread();
     MOZ_ASSERT(mPromiseProxy, "Was Done() called twice?");
 
-    RefPtr<PromiseWorkerProxy> proxy = mPromiseProxy.forget();
+    RefPtr<PromiseWorkerProxy> proxy = std::move(mPromiseProxy);
     MutexAutoLock lock(proxy->Lock());
     if (proxy->CleanedUp()) {
       return NS_OK;

dom/payments/PaymentRequestData.cpp

@@ -171,7 +171,7 @@ nsresult PaymentDetailsModifier::Create(
         return rv;
       }
     }
-    displayItems = items.forget();
+    displayItems = std::move(items);
   }
   nsCOMPtr<nsIPaymentDetailsModifier> modifier =
       new PaymentDetailsModifier(aIPCModifier.supportedMethods(), total,
@@ -322,7 +322,7 @@ nsresult PaymentDetails::Create(const IPCPaymentDetails& aIPCDetails,
       return rv;
     }
   }
-  displayItems = items.forget();
+  displayItems = std::move(items);
 
   nsCOMPtr<nsIArray> shippingOptions;
   nsCOMPtr<nsIMutableArray> options = do_CreateInstance(NS_ARRAY_CONTRACTID);
@@ -339,7 +339,7 @@ nsresult PaymentDetails::Create(const IPCPaymentDetails& aIPCDetails,
       return rv;
     }
   }
-  shippingOptions = options.forget();
+  shippingOptions = std::move(options);
 
   nsCOMPtr<nsIArray> modifiers;
   nsCOMPtr<nsIMutableArray> detailsModifiers =
@@ -357,7 +357,7 @@ nsresult PaymentDetails::Create(const IPCPaymentDetails& aIPCDetails,
       return rv;
     }
   }
-  modifiers = detailsModifiers.forget();
+  modifiers = std::move(detailsModifiers);
 
   nsCOMPtr<nsIPaymentDetails> details = new PaymentDetails(
       aIPCDetails.id(), total, displayItems, shippingOptions, modifiers,

dom/presentation/PresentationSessionInfo.cpp

@@ -1028,7 +1028,7 @@ nsresult PresentationControllingInfo::NotifyReconnectResult(nsresult aStatus) {
 
   mIsReconnecting = false;
   nsCOMPtr<nsIPresentationServiceCallback> callback =
-      mReconnectCallback.forget();
+      std::move(mReconnectCallback);
   if (NS_FAILED(aStatus)) {
     return callback->NotifyError(aStatus);
   }

dom/promise/Promise.cpp

@@ -378,14 +378,14 @@ class PromiseNativeHandlerShim final : public PromiseNativeHandler {
 
   MOZ_CAN_RUN_SCRIPT
   void ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override {
-    RefPtr<PromiseNativeHandler> inner = mInner.forget();
+    RefPtr<PromiseNativeHandler> inner = std::move(mInner);
     inner->ResolvedCallback(aCx, aValue);
     MOZ_ASSERT(!mInner);
   }
 
   MOZ_CAN_RUN_SCRIPT
   void RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override {
-    RefPtr<PromiseNativeHandler> inner = mInner.forget();
+    RefPtr<PromiseNativeHandler> inner = std::move(mInner);
     inner->RejectedCallback(aCx, aValue);
     MOZ_ASSERT(!mInner);
   }

dom/push/PushManager.cpp

@@ -94,7 +94,7 @@ nsresult GetSubscriptionParams(nsIPushSubscription* aSubscription,
 class GetSubscriptionResultRunnable final : public WorkerRunnable {
  public:
   GetSubscriptionResultRunnable(WorkerPrivate* aWorkerPrivate,
-                                already_AddRefed<PromiseWorkerProxy>&& aProxy,
+                                RefPtr<PromiseWorkerProxy>&& aProxy,
                                 nsresult aStatus, const nsAString& aEndpoint,
                                 const nsAString& aScope,
                                 nsTArray<uint8_t>&& aRawP256dhKey,
@@ -171,7 +171,7 @@ class GetSubscriptionCallback final : public nsIPushSubscriptionCallback {
 
     WorkerPrivate* worker = mProxy->GetWorkerPrivate();
     RefPtr<GetSubscriptionResultRunnable> r = new GetSubscriptionResultRunnable(
-        worker, mProxy.forget(), aStatus, endpoint, mScope,
+        worker, std::move(mProxy), aStatus, endpoint, mScope,
         std::move(rawP256dhKey), std::move(authSecret),
         std::move(appServerKey));
     MOZ_ALWAYS_TRUE(r->Dispatch());

dom/push/PushSubscription.cpp

@@ -55,7 +55,7 @@ NS_IMPL_ISUPPORTS(UnsubscribeResultCallback, nsIUnsubscribeResultCallback)
 class UnsubscribeResultRunnable final : public WorkerRunnable {
  public:
   UnsubscribeResultRunnable(WorkerPrivate* aWorkerPrivate,
-                            already_AddRefed<PromiseWorkerProxy>&& aProxy,
+                            RefPtr<PromiseWorkerProxy>&& aProxy,
                             nsresult aStatus, bool aSuccess)
       : WorkerRunnable(aWorkerPrivate),
         mProxy(std::move(aProxy)),
@@ -110,7 +110,7 @@ class WorkerUnsubscribeResultCallback final
 
     WorkerPrivate* worker = mProxy->GetWorkerPrivate();
     RefPtr<UnsubscribeResultRunnable> r = new UnsubscribeResultRunnable(
-        worker, mProxy.forget(), aStatus, aSuccess);
+        worker, std::move(mProxy), aStatus, aSuccess);
     MOZ_ALWAYS_TRUE(r->Dispatch());
 
     return NS_OK;

dom/script/ScriptLoader.cpp

@@ -2028,8 +2028,8 @@ NotifyOffThreadScriptLoadCompletedRunnable::Run() {
 
   // We want these to be dropped on the main thread, once we return from this
   // function.
-  RefPtr<ScriptLoadRequest> request = mRequest.forget();
-  RefPtr<ScriptLoader> loader = mLoader.forget();
+  RefPtr<ScriptLoadRequest> request = std::move(mRequest);
+  RefPtr<ScriptLoader> loader = std::move(mLoader);
 
   request->mOffThreadToken = mToken;
   nsresult rv = loader->ProcessOffThreadRequest(request);

dom/security/DOMSecurityManager.cpp

@@ -48,7 +48,7 @@ void DOMSecurityManager::Initialize() {
 
   obs->AddObserver(service, NS_HTTP_ON_EXAMINE_RESPONSE_TOPIC, false);
   obs->AddObserver(service, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
-  gDOMSecurityManager = service.forget();
+  gDOMSecurityManager = std::move(service);
 }
 
 /* static */

dom/security/featurepolicy/FeaturePolicyUtils.cpp

@@ -307,12 +307,12 @@ bool IPDLParamTraits<dom::FeaturePolicy*>::Read(
 
   nsString declaredString = info.declaredString();
   if (declaredString.IsEmpty() || !info.selfOrigin()) {
-    *aResult = featurePolicy.forget();
+    *aResult = std::move(featurePolicy);
     return true;
   }
   featurePolicy->SetDeclaredPolicy(nullptr, declaredString, info.selfOrigin(),
                                    info.srcOrigin());
-  *aResult = featurePolicy.forget();
+  *aResult = std::move(featurePolicy);
   return true;
 }
 }  // namespace ipc

dom/serviceworkers/ServiceWorkerContainer.cpp

@@ -180,7 +180,7 @@ void ServiceWorkerContainer::ReceiveMessage(
     const ClientPostMessageArgs& aArgs) {
   RefPtr<ReceivedMessage> message = new ReceivedMessage(aArgs);
   if (mMessagesStarted) {
-    EnqueueReceivedMessageDispatch(message.forget());
+    EnqueueReceivedMessageDispatch(std::move(message));
   } else {
     mPendingMessages.AppendElement(message.forget());
   }
@@ -287,13 +287,13 @@ already_AddRefed<Promise> ServiceWorkerContainer::Register(
   if (aRv.Failed()) {
     return nullptr;
   }
-  scriptURI = cloneWithoutRef.forget();
+  scriptURI = std::move(cloneWithoutRef);
 
   aRv = NS_GetURIWithoutRef(scopeURI, getter_AddRefs(cloneWithoutRef));
   if (aRv.Failed()) {
     return nullptr;
   }
-  scopeURI = cloneWithoutRef.forget();
+  scopeURI = std::move(cloneWithoutRef);
 
   ServiceWorkerScopeAndScriptAreValid(clientInfo.ref(), scopeURI, scriptURI,
                                       aRv);

dom/serviceworkers/ServiceWorkerManager.cpp

@@ -392,7 +392,7 @@ RefPtr<GenericErrorResultPromise> ServiceWorkerManager::StartControllingClient(
   auto entry = mControlledClients.LookupForAdd(aClientInfo.Id());
   if (entry) {
     RefPtr<ServiceWorkerRegistrationInfo> old =
-        entry.Data()->mRegistrationInfo.forget();
+        std::move(entry.Data()->mRegistrationInfo);
 
     if (aControlClientHandle) {
       promise = entry.Data()->mClientHandle->Control(active);
@@ -468,7 +468,7 @@ void ServiceWorkerManager::StopControllingClient(
   }
 
   RefPtr<ServiceWorkerRegistrationInfo> reg =
-      entry.Data()->mRegistrationInfo.forget();
+      std::move(entry.Data()->mRegistrationInfo);
 
   entry.Remove();
 

dom/serviceworkers/ServiceWorkerPrivate.cpp

@@ -106,7 +106,7 @@ ServiceWorkerPrivate::ServiceWorkerPrivate(ServiceWorkerInfo* aInfo)
     MOZ_ALWAYS_SUCCEEDS(inner->Initialize());
 #endif
 
-    mInner = inner.forget();
+    mInner = std::move(inner);
   }
 }
 
@@ -1798,7 +1798,8 @@ void ServiceWorkerPrivate::TerminateWorker() {
     }
 
     Unused << NS_WARN_IF(!mWorkerPrivate->Cancel());
-    RefPtr<WorkerPrivate> workerPrivate(mWorkerPrivate.forget());
+    RefPtr<WorkerPrivate> workerPrivate = std::move(mWorkerPrivate);
+    mozilla::Unused << workerPrivate;
     mSupportsArray.Clear();
 
     // Any pending events are never going to fire on this worker.  Cancel
@@ -1869,7 +1870,7 @@ void ServiceWorkerPrivate::UpdateState(ServiceWorkerState aState) {
   mPendingFunctionalEvents.SwapElements(pendingEvents);
 
   for (uint32_t i = 0; i < pendingEvents.Length(); ++i) {
-    RefPtr<WorkerRunnable> r = pendingEvents[i].forget();
+    RefPtr<WorkerRunnable> r = std::move(pendingEvents[i]);
     if (NS_WARN_IF(!r->Dispatch())) {
       NS_WARNING("Failed to dispatch pending functional event!");
     }