Autoplay time metric

third_party/WebKit/Source/core/html/media/AutoplayPolicy.h

Index: third_party/WebKit/Source/core/html/media/AutoplayPolicy.h
diff --git a/third_party/WebKit/Source/core/html/media/AutoplayPolicy.h b/third_party/WebKit/Source/core/html/media/AutoplayPolicy.h
index a47795b39273d2cfb872adef39b9c330f8a8e7ca..2c25b2847884c99d0ad634ac7434b0c4029c98ff 100644
--- a/third_party/WebKit/Source/core/html/media/AutoplayPolicy.h
+++ b/third_party/WebKit/Source/core/html/media/AutoplayPolicy.h
@@ -9,6 +9,7 @@
 #include "core/CoreExport.h"
 #include "core/dom/ExceptionCode.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/WebMediaPlayerClient.h"
 
 namespace blink {
 
@@ -66,6 +67,9 @@ class AutoplayPolicy final : public GarbageCollected<AutoplayPolicy> {
   // gesture is currently being processed.
   bool IsGestureNeededForPlayback() const;
 
+  // Called when source is initialized and loading starts.
+  void OnLoadStarted(WebMediaPlayer::LoadType);
+
   DECLARE_VIRTUAL_TRACE();
 
  private: