Autoplay time metric

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

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef AutoplayPolicy_h
 #define AutoplayPolicy_h
 
 #include "bindings/core/v8/Nullable.h"
 #include "core/dom/ExceptionCode.h"
 #include "platform/heap/Handle.h"
@@ skipping 38 matching lines @@
 
   // Unlock user gesture if a user gesture can be utilized.
   void TryUnlockingUserGesture();
 
   // Return true if and only if a user gesture is requried for playback.  Even
   // if isLockedPendingUserGesture() return true, this might return false if
   // the requirement is currently overridden.  This does not check if a user
   // gesture is currently being processed.
   bool IsGestureNeededForPlayback() const;
 
+  // Called when source is initialized and loading starts.
+  void OnLoadStarted();
+
   DECLARE_VIRTUAL_TRACE();
 
  private:
   friend class AutoplayUmaHelper;
   friend class AutoplayUmaHelperTest;
 
   // Start autoplaying the video element whenever its visible.
   void StartAutoplayMutedWhenVisible();
 
   // Returns whether the media element is eligible to autoplay muted.
@@ skipping 35 matching lines @@
   Member<ElementVisibilityObserver> autoplay_visibility_observer_;
 
   Member<AutoplayUmaHelper> autoplay_uma_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(AutoplayPolicy);
 };
 
 }  // namespace blink
 
 #endif  // AutoplayPolicy_h