Bug 1520912 - remove 'mUserGestureActivated' from Document. r=nika

We've changed the way to set `userGestureActivation` flag which will be set in `BrowsingContext`, so we should remove `mUserGestureActivated` flag from Document.

Differential Revision: https://phabricator.services.mozilla.com/D16900

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

dom/base/Document.cpp

@@ -1323,7 +1323,6 @@ Document::Document(const char* aContentType)
       mNotifiedPageForUseCounter(0),
       mUserHasInteracted(false),
       mHasUserInteractionTimerScheduled(false),
-      mUserGestureActivated(false),
       mStackRefCnt(0),
       mUpdateNestLevel(0),
       mViewportType(Unknown),
@@ -11717,13 +11716,14 @@ void Document::MaybeNotifyAutoplayBlocked() {
 }
 
 void Document::ClearUserGestureActivation() {
-  Document* doc = this;
-  while (doc) {
-    MOZ_LOG(gUserInteractionPRLog, LogLevel::Debug,
-            ("Reset user activation flag for document %p.", this));
-    doc->mUserGestureActivated = false;
-    doc = doc->GetSameTypeParentDocument();
+  if (!HasBeenUserGestureActivated()) {
+    return;
   }
+  RefPtr<BrowsingContext> bc = GetBrowsingContext();
+  if (!bc) {
+    return;
+  }
+  bc->NotifyResetUserGestureActivation();
 }
 
 void Document::SetDocTreeHadAudibleMedia() {

dom/base/Document.h

@@ -4250,13 +4250,6 @@ class Document : public nsINode,
   // timer is scheduled.
   bool mHasUserInteractionTimerScheduled;
 
-  // Whether the user has interacted with the document via a restricted
-  // set of gestures which are likely to be interaction with the document,
-  // and not events that are fired as a byproduct of the user interacting
-  // with the browser (events for like scrolling the page, keyboard short
-  // cuts, etc).
-  bool mUserGestureActivated;
-
   mozilla::TimeStamp mPageUnloadingEventTimeStamp;
 
   RefPtr<mozilla::dom::DocGroup> mDocGroup;