diff --git a/dom/base/nsContentUtils.cpp b/dom/base/nsContentUtils.cpp
index 724e18c56d23..dd0e932bbc2b 100644
--- a/dom/base/nsContentUtils.cpp
+++ b/dom/base/nsContentUtils.cpp
@@ -8103,8 +8103,8 @@ nsContentUtils::StorageAccess nsContentUtils::StorageAllowedForWindow(
     // callee is able to deal with a null channel argument, and if passed null,
     // will only fail to notify the UI in case storage gets blocked.
     nsIChannel* channel = document->GetChannel();
-    return InternalStorageAllowedCheck(principal, aWindow, nullptr, channel,
-                                       *aRejectedReason);
+    return InternalStorageAllowedForPrincipal(principal, aWindow, nullptr,
+                                              channel, *aRejectedReason);
   }
 
   // No document? Let's return a generic rejected reason.
@@ -8124,8 +8124,8 @@ nsContentUtils::StorageAccess nsContentUtils::StorageAllowedForDocument(
     nsIChannel* channel = aDoc->GetChannel();
 
     uint32_t rejectedReason = 0;
-    return InternalStorageAllowedCheck(principal, inner, nullptr, channel,
-                                       rejectedReason);
+    return InternalStorageAllowedForPrincipal(principal, inner, nullptr,
+                                              channel, rejectedReason);
   }
 
   return StorageAccess::eDeny;
@@ -8139,8 +8139,8 @@ nsContentUtils::StorageAccess nsContentUtils::StorageAllowedForNewWindow(
   // parent may be nullptr
 
   uint32_t rejectedReason = 0;
-  return InternalStorageAllowedCheck(aPrincipal, aParent, aURI, nullptr,
-                                     rejectedReason);
+  return InternalStorageAllowedForPrincipal(aPrincipal, aParent, aURI, nullptr,
+                                            rejectedReason);
 }
 
 // static, public
@@ -8155,18 +8155,18 @@ nsContentUtils::StorageAccess nsContentUtils::StorageAllowedForChannel(
   NS_ENSURE_TRUE(principal, nsContentUtils::StorageAccess::eDeny);
 
   uint32_t rejectedReason = 0;
-  nsContentUtils::StorageAccess result = InternalStorageAllowedCheck(
+  nsContentUtils::StorageAccess result = InternalStorageAllowedForPrincipal(
       principal, nullptr, nullptr, aChannel, rejectedReason);
 
   return result;
 }
 
 // static, public
-nsContentUtils::StorageAccess nsContentUtils::StorageAllowedForServiceWorker(
+nsContentUtils::StorageAccess nsContentUtils::StorageAllowedForPrincipal(
     nsIPrincipal* aPrincipal) {
   uint32_t rejectedReason = 0;
-  return InternalStorageAllowedCheck(aPrincipal, nullptr, nullptr, nullptr,
-                                     rejectedReason);
+  return InternalStorageAllowedForPrincipal(aPrincipal, nullptr, nullptr,
+                                            nullptr, rejectedReason);
 }
 
 // static, private
@@ -8356,9 +8356,12 @@ bool nsContentUtils::StorageDisabledByAntiTracking(nsPIDOMWindowInner* aWindow,
 }
 
 // static, private
-nsContentUtils::StorageAccess nsContentUtils::InternalStorageAllowedCheck(
-    nsIPrincipal* aPrincipal, nsPIDOMWindowInner* aWindow, nsIURI* aURI,
-    nsIChannel* aChannel, uint32_t& aRejectedReason) {
+nsContentUtils::StorageAccess
+nsContentUtils::InternalStorageAllowedForPrincipal(nsIPrincipal* aPrincipal,
+                                                   nsPIDOMWindowInner* aWindow,
+                                                   nsIURI* aURI,
+                                                   nsIChannel* aChannel,
+                                                   uint32_t& aRejectedReason) {
   MOZ_ASSERT(aPrincipal);
 
   aRejectedReason = 0;
@@ -8410,7 +8413,7 @@ nsContentUtils::StorageAccess nsContentUtils::InternalStorageAllowedCheck(
   //
   // This is due to backwards-compatibility and the state of storage access
   // before the introducton of
-  // nsContentUtils::InternalStorageAllowedCheck:
+  // nsContentUtils::InternalStorageAllowedForPrincipal:
   //
   // BEFORE:
   // localStorage, caches: allowed in 3rd-party iframes always
diff --git a/dom/base/nsContentUtils.h b/dom/base/nsContentUtils.h
index 35ac8a6df4f5..b41613a9da39 100644
--- a/dom/base/nsContentUtils.h
+++ b/dom/base/nsContentUtils.h
@@ -2967,9 +2967,10 @@ class nsContentUtils {
 
   /*
    * Checks if storage for the given principal is permitted by the user's
-   * preferences. This method should be used only by ServiceWorker loading.
+   * preferences. The caller is assumed to not be a third-party iframe.
+   * (if that is possible, the caller should use StorageAllowedForWindow)
    */
-  static StorageAccess StorageAllowedForServiceWorker(nsIPrincipal* aPrincipal);
+  static StorageAccess StorageAllowedForPrincipal(nsIPrincipal* aPrincipal);
 
   /*
    * Returns true if this document should disable storages because of the
@@ -3355,7 +3356,7 @@ class nsContentUtils {
    * Gets the current cookie lifetime policy for a given principal by checking
    * with preferences and the permission manager.
    *
-   * Used in the implementation of InternalStorageAllowedCheck.
+   * Used in the implementation of InternalStorageAllowedForPrincipal.
    */
   static void GetCookieLifetimePolicyForPrincipal(nsIPrincipal* aPrincipal,
                                                   uint32_t* aLifetimePolicy);
@@ -3369,14 +3370,12 @@ class nsContentUtils {
    * allow a channel instead of the window reference when determining 3rd party
    * status.
    *
-   * Used in the implementation of StorageAllowedForWindow,
-   * StorageAllowedForChannel and StorageAllowedForServiceWorker.
+   * Used in the implementation of StorageAllowedForWindow and
+   * StorageAllowedForPrincipal.
    */
-  static StorageAccess InternalStorageAllowedCheck(nsIPrincipal* aPrincipal,
-                                                   nsPIDOMWindowInner* aWindow,
-                                                   nsIURI* aURI,
-                                                   nsIChannel* aChannel,
-                                                   uint32_t& aRejectedReason);
+  static StorageAccess InternalStorageAllowedForPrincipal(
+      nsIPrincipal* aPrincipal, nsPIDOMWindowInner* aWindow, nsIURI* aURI,
+      nsIChannel* aChannel, uint32_t& aRejectedReason);
 
   static nsINode* GetCommonAncestorHelper(nsINode* aNode1, nsINode* aNode2);
   static nsIContent* GetCommonFlattenedTreeAncestorHelper(
diff --git a/dom/serviceworkers/ServiceWorkerPrivate.cpp b/dom/serviceworkers/ServiceWorkerPrivate.cpp
index c43d0f2f03bc..79a51b0d55fc 100644
--- a/dom/serviceworkers/ServiceWorkerPrivate.cpp
+++ b/dom/serviceworkers/ServiceWorkerPrivate.cpp
@@ -1723,7 +1723,7 @@ nsresult ServiceWorkerPrivate::SpawnWorkerIfNeeded(WakeUpReason aWhy,
   info.mLoadingPrincipal = info.mPrincipal;
 
   nsContentUtils::StorageAccess access =
-      nsContentUtils::StorageAllowedForServiceWorker(info.mPrincipal);
+      nsContentUtils::StorageAllowedForPrincipal(info.mPrincipal);
   info.mStorageAllowed =
       access > nsContentUtils::StorageAccess::ePrivateBrowsing;
   info.mOriginAttributes = mInfo->GetOriginAttributes();
diff --git a/dom/workers/remoteworkers/RemoteWorkerChild.cpp b/dom/workers/remoteworkers/RemoteWorkerChild.cpp
index 047f0bb5784b..d7fbbf6c4ed1 100644
--- a/dom/workers/remoteworkers/RemoteWorkerChild.cpp
+++ b/dom/workers/remoteworkers/RemoteWorkerChild.cpp
@@ -266,7 +266,11 @@ nsresult RemoteWorkerChild::ExecWorkerOnMainThread(
   info.mDomain = aData.domain();
   info.mPrincipal = principal;
   info.mLoadingPrincipal = loadingPrincipal;
-  info.mStorageAllowed = aData.isStorageAccessAllowed();
+
+  nsContentUtils::StorageAccess access =
+      nsContentUtils::StorageAllowedForPrincipal(info.mPrincipal);
+  info.mStorageAllowed =
+      access > nsContentUtils::StorageAccess::ePrivateBrowsing;
   info.mOriginAttributes =
       BasePrincipal::Cast(principal)->OriginAttributesRef();
 
diff --git a/dom/workers/remoteworkers/RemoteWorkerTypes.ipdlh b/dom/workers/remoteworkers/RemoteWorkerTypes.ipdlh
index 68bb999d7d43..666761550188 100644
--- a/dom/workers/remoteworkers/RemoteWorkerTypes.ipdlh
+++ b/dom/workers/remoteworkers/RemoteWorkerTypes.ipdlh
@@ -43,8 +43,6 @@ struct RemoteWorkerData
 
   OptionalIPCClientInfo clientInfo;
 
-  bool isStorageAccessAllowed;
-
   bool isSharedWorker;
 };
 
diff --git a/dom/workers/sharedworkers/SharedWorker.cpp b/dom/workers/sharedworkers/SharedWorker.cpp
index 1d48019ec420..cc8118adbb55 100644
--- a/dom/workers/sharedworkers/SharedWorker.cpp
+++ b/dom/workers/sharedworkers/SharedWorker.cpp
@@ -206,15 +206,11 @@ already_AddRefed<SharedWorker> SharedWorker::Constructor(
     ipcClientInfo = void_t();
   }
 
-  bool storageAccessAllowed =
-      storageAllowed > nsContentUtils::StorageAccess::ePrivateBrowsing;
-
   RemoteWorkerData remoteWorkerData(
       nsString(aScriptURL), baseURL, resolvedScriptURL, name,
       loadingPrincipalInfo, loadingPrincipalCSP, loadingPrincipalPreloadCSP,
       principalInfo, principalCSP, principalPreloadCSP, loadInfo.mDomain,
-      isSecureContext, ipcClientInfo, storageAccessAllowed,
-      true /* sharedWorker */);
+      isSecureContext, ipcClientInfo, true /* sharedWorker */);
 
   PSharedWorkerChild* pActor = actorChild->SendPSharedWorkerConstructor(
       remoteWorkerData, loadInfo.mWindowID, portIdentifier);