Adds keyboard functionality for videos.

third_party/WebKit/Source/core/html/shadow/MediaControlElements.h

Index: third_party/WebKit/Source/core/html/shadow/MediaControlElements.h
diff --git a/third_party/WebKit/Source/core/html/shadow/MediaControlElements.h b/third_party/WebKit/Source/core/html/shadow/MediaControlElements.h
index 875fde98892267f95ef60f231cd4caa404dd5916..e67b0853e3ea9558843144e63a00df9944ee56d2 100644
--- a/third_party/WebKit/Source/core/html/shadow/MediaControlElements.h
+++ b/third_party/WebKit/Source/core/html/shadow/MediaControlElements.h
@@ -257,10 +257,11 @@ class MediaControlTimelineElement final : public MediaControlInputElement {
   void setPosition(double);
   void setDuration(double);
 
+  void defaultEventHandler(Event*) override;
+
  private:
   explicit MediaControlTimelineElement(MediaControls&);
 
-  void defaultEventHandler(Event*) override;
   bool keepEventInNode(Event*) override;
 };
 
@@ -339,10 +340,11 @@ class MediaControlVolumeSliderElement final : public MediaControlInputElement {
   bool willRespondToMouseClickEvents() override;
   void setVolume(double);
 
+  void defaultEventHandler(Event*) override;
+
  private:
   explicit MediaControlVolumeSliderElement(MediaControls&);
 
-  void defaultEventHandler(Event*) override;
   bool keepEventInNode(Event*) override;
 };