Media Controls: move timeline related code to modules.

third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h

Index: third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h
diff --git a/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h b/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h
index d761f237a4a66c798583b11414f53dcf78d029ce..562f668dfcf95f355e9054c8fd22fd4631a63c8c 100644
--- a/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h
+++ b/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h
@@ -52,6 +52,7 @@ class MediaControlPanelEnclosureElement;
 class MediaControlPlayButtonElement;
 class MediaControlRemainingTimeDisplayElement;
 class MediaControlTextTrackListElement;
+class MediaControlTimelineElement;
 class MediaControlToggleClosedCaptionsButtonElement;
 class ShadowRoot;
 
@@ -102,10 +103,6 @@ class MODULES_EXPORT MediaControlsImpl final : public HTMLDivElement,
   // Return the internal elements, which is used by registering clicking
   // EventHandlers from MediaControlsWindowEventListener.
   HTMLDivElement* PanelElement() override;
-  void BeginScrubbing() override;
-  void EndScrubbing() override;
-  void UpdateCurrentTimeDisplay() override;
-  bool OverflowMenuVisible() override;
   // TODO(mlamouri): this method is needed in order to notify the controls that
   // the `MediaControlsEnabled` setting has changed.
   void OnMediaControlsEnabledChange() override {
@@ -123,11 +120,17 @@ class MODULES_EXPORT MediaControlsImpl final : public HTMLDivElement,
   void ShowTextTrackAtIndex(unsigned);
   void DisableShowingTextTracks();
 
-  // Toggle the overflow menu visibility.
+  // Methods related to the overflow menu.
   void ToggleOverflowMenu();
+  bool OverflowMenuVisible();
 
   void ShowOverlayCastButtonIfNeeded();
 
+  // Methods call by the scrubber.
+  void BeginScrubbing();
+  void EndScrubbing();
+  void UpdateCurrentTimeDisplay();
+
   DECLARE_VIRTUAL_TRACE();
 
  private: