Bug 1507580 - Remove AutoplayPermissionRequest::mMainThreadTarget since it is unused r=baku

Differential Revision: https://phabricator.services.mozilla.com/D12055

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

dom/html/AutoplayPermissionRequest.cpp

@@ -25,13 +25,11 @@ NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(AutoplayPermissionRequest,
 AutoplayPermissionRequest::AutoplayPermissionRequest(
   AutoplayPermissionManager* aManager,
   nsGlobalWindowInner* aWindow,
-  nsIPrincipal* aNodePrincipal,
-  nsIEventTarget* aMainThreadTarget)
+  nsIPrincipal* aNodePrincipal)
   : ContentPermissionRequestBase(aNodePrincipal, false, aWindow,
                                  NS_LITERAL_CSTRING(""), // No testing pref used in this class
                                  NS_LITERAL_CSTRING("autoplay-media"))
   , mManager(aManager)
-  , mMainThreadTarget(aMainThreadTarget)
 {
 }
 
@@ -68,15 +66,13 @@ already_AddRefed<AutoplayPermissionRequest>
 AutoplayPermissionRequest::Create(nsGlobalWindowInner* aWindow,
                                   AutoplayPermissionManager* aManager)
 {
-  if (!aWindow || !aWindow->GetPrincipal() ||
-      !aWindow->EventTargetFor(TaskCategory::Other)) {
+  if (!aWindow || !aWindow->GetPrincipal()) {
     return nullptr;
   }
   RefPtr<AutoplayPermissionRequest> request =
     new AutoplayPermissionRequest(aManager,
                                   aWindow,
-                                  aWindow->GetPrincipal(),
-                                  aWindow->EventTargetFor(TaskCategory::Other));
+                                  aWindow->GetPrincipal());
   PLAY_REQUEST_LOG("AutoplayPermissionRequest %p Create()", request.get());
   return request.forget();
 }

dom/html/AutoplayPermissionRequest.h

@@ -45,13 +45,10 @@ public:
 private:
   AutoplayPermissionRequest(AutoplayPermissionManager* aManager,
                             nsGlobalWindowInner* aWindow,
-                            nsIPrincipal* aNodePrincipal,
-                            nsIEventTarget* aMainThreadTarget);
+                            nsIPrincipal* aNodePrincipal);
   ~AutoplayPermissionRequest();
 
   WeakPtr<AutoplayPermissionManager> mManager;
-
-  nsCOMPtr<nsIEventTarget> mMainThreadTarget;
 };
 
 } // namespace mozilla