Deprecate UnthrottledThreadTimer.

third_party/WebKit/Source/core/html/HTMLMediaElement.h

Index: third_party/WebKit/Source/core/html/HTMLMediaElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLMediaElement.h b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
index 36a4468e652c81d657a72a540132f95eb128ed3a..40aba5846546fb81b8165d022bff6799932ee5e9 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
@@ -546,11 +546,13 @@ class CORE_EXPORT HTMLMediaElement : public HTMLElement,
   void checkViewportIntersectionChanged();
   void viewportFillDebouncerTimerFired(TimerBase*);
 
-  UnthrottledThreadTimer<HTMLMediaElement> m_loadTimer;
-  UnthrottledThreadTimer<HTMLMediaElement> m_progressEventTimer;
-  UnthrottledThreadTimer<HTMLMediaElement> m_playbackProgressTimer;
-  UnthrottledThreadTimer<HTMLMediaElement> m_audioTracksTimer;
-  UnthrottledThreadTimer<HTMLMediaElement> m_viewportFillDebouncerTimer;
+  // These timers should not be throttled.
+  TaskRunnerTimer<HTMLMediaElement> m_loadTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_progressEventTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_playbackProgressTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_audioTracksTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_viewportFillDebouncerTimer;
+
   Member<TimeRanges> m_playedTimeRanges;
   Member<GenericEventQueue> m_asyncEventQueue;