[Android] A prototype of the interactive media notification.

chrome/browser/android/chrome_web_contents_delegate_android.h

Index: chrome/browser/android/chrome_web_contents_delegate_android.h
diff --git a/chrome/browser/android/chrome_web_contents_delegate_android.h b/chrome/browser/android/chrome_web_contents_delegate_android.h
index 749a19f204283bc129866afec7034f910bfc9809..1d46c503eb9177a572208b9e6b0b887eedb6ac4e 100644
--- a/chrome/browser/android/chrome_web_contents_delegate_android.h
+++ b/chrome/browser/android/chrome_web_contents_delegate_android.h
@@ -76,6 +76,8 @@ class ChromeWebContentsDelegateAndroid
                       const gfx::Rect& initial_rect,
                       bool user_gesture,
                       bool* was_blocked) override;
+  void ShowMediaControls(content::WebContents* web_contents) override;
+  void HideMediaControls(content::WebContents* web_contents) override;
 
  private:
   // NotificationObserver implementation.