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 05de20ea0119e09ac4cb5ccf83341e133eca71de..37e4ce12f9631c184172f667e5cc854a170ffb82 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
@@ -553,12 +553,13 @@ class CORE_EXPORT HTMLMediaElement
 
   void viewportFillDebouncerTimerFired(TimerBase*);
 
-  UnthrottledThreadTimer<HTMLMediaElement> m_loadTimer;
-  UnthrottledThreadTimer<HTMLMediaElement> m_progressEventTimer;
-  UnthrottledThreadTimer<HTMLMediaElement> m_playbackProgressTimer;
-  UnthrottledThreadTimer<HTMLMediaElement> m_audioTracksTimer;
-  UnthrottledThreadTimer<HTMLMediaElement> m_viewportFillDebouncerTimer;
-  UnthrottledThreadTimer<HTMLMediaElement> m_checkViewportIntersectionTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_loadTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_progressEventTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_playbackProgressTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_audioTracksTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_viewportFillDebouncerTimer;
+  TaskRunnerTimer<HTMLMediaElement> m_checkViewportIntersectionTimer;
+
   Member<TimeRanges> m_playedTimeRanges;
   Member<GenericEventQueue> m_asyncEventQueue;