[Android] A prototype of the interactive media notification.

content/public/browser/web_contents_delegate.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 
 #include <set>
 #include <string>
 
@@ skipping 387 matching lines @@
                          int active_match_ordinal,
                          bool final_update) {}
 
 #if defined(OS_ANDROID)
   // Provides the rects of the current find-in-page matches.
   // Sent as a reply to RequestFindMatchRects.
   virtual void FindMatchRectsReply(WebContents* web_contents,
                                    int version,
                                    const std::vector<gfx::RectF>& rects,
                                    const gfx::RectF& active_rect) {}
+
+  // Notifies the tab that the state relevant to the media controls has changed.
+  virtual void UpdateMediaControls(WebContents* web_contents) {}
 #endif
 
   // Invoked when the preferred size of the contents has been changed.
   virtual void UpdatePreferredSize(WebContents* web_contents,
                                    const gfx::Size& pref_size) {}
 
   // Invoked when the contents auto-resized and the container should match it.
   virtual void ResizeDueToAutoResize(WebContents* web_contents,
                                      const gfx::Size& new_size) {}
 
@@ skipping 89 matching lines @@
   // Called when |this| is no longer the WebContentsDelegate for |source|.
   void Detach(WebContents* source);
 
   // The WebContents that this is currently a delegate for.
   std::set<WebContents*> attached_contents_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_