Bug 1267530 part 1 - Add some profiler marker for fullscreen transition. r=smaug,BenWa

MozReview-Commit-ID: CeFdBO9uz8C

--HG--
extra : source : ca6459b594f0dcfd46066bbab29ce068d4de6200

dom/base/nsDOMWindowUtils.cpp

@@ -3157,6 +3157,7 @@ LinkedList<OldWindowSize> OldWindowSize::sList;
 NS_IMETHODIMP
 nsDOMWindowUtils::HandleFullscreenRequests(bool* aRetVal)
 {
+  PROFILER_MARKER("Enter fullscreen");
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_STATE(doc);
 
@@ -3179,6 +3180,7 @@ nsDOMWindowUtils::HandleFullscreenRequests(bool* aRetVal)
 nsresult
 nsDOMWindowUtils::ExitFullscreen()
 {
+  PROFILER_MARKER("Exit fullscreen");
   nsCOMPtr<nsIDocument> doc = GetDocument();
   NS_ENSURE_STATE(doc);
 

dom/base/nsGlobalWindow.cpp

@@ -6181,7 +6181,9 @@ private:
     // AfterToggle stage happens after we toggle the fullscreen state.
     // In this stage, the task triggers the post-toggle fullscreen
     // transition on the widget.
-    eAfterToggle
+    eAfterToggle,
+    // End stage is triggered after the final transition finishes.
+    eEnd
   };
 
   class Observer final : public nsIObserver
@@ -6227,10 +6229,12 @@ FullscreenTransitionTask::Run()
     return NS_OK;
   }
   if (stage == eBeforeToggle) {
+    PROFILER_MARKER("Fullscreen transition start");
     mWidget->PerformFullscreenTransition(nsIWidget::eBeforeFullscreenToggle,
                                          mDuration.mFadeIn, mTransitionData,
                                          this);
   } else if (stage == eToggleFullscreen) {
+    PROFILER_MARKER("Fullscreen toggle start");
     if (MOZ_UNLIKELY(mWindow->mFullScreen != mFullscreen)) {
       // This could happen in theory if several fullscreen requests in
       // different direction happen continuously in a short time. We
@@ -6270,6 +6274,8 @@ FullscreenTransitionTask::Run()
     mWidget->PerformFullscreenTransition(nsIWidget::eAfterFullscreenToggle,
                                          mDuration.mFadeOut, mTransitionData,
                                          this);
+  } else if (stage == eEnd) {
+    PROFILER_MARKER("Fullscreen transition end");
   }
   return NS_OK;
 }
@@ -6290,6 +6296,7 @@ FullscreenTransitionTask::Observer::Observe(nsISupports* aSubject,
       // The paint notification arrives first. Cancel the timer.
       mTask->mTimer->Cancel();
       shouldContinue = true;
+      PROFILER_MARKER("Fullscreen toggle end");
     }
   } else {
 #ifdef DEBUG
@@ -6300,6 +6307,7 @@ FullscreenTransitionTask::Observer::Observe(nsISupports* aSubject,
                "Should only trigger this with the timer the task created");
 #endif
     shouldContinue = true;
+    PROFILER_MARKER("Fullscreen toggle timeout");
   }
   if (shouldContinue) {
     nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();