[Android] A prototype of the interactive media notification.

content/public/browser/web_contents.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_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_
 
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 543 matching lines @@
   // tab menu item...). This is false for actions that indirectly close the tab,
   // such as closing the window.  The setter is maintained by TabStripModel, and
   // the getter only useful from within TAB_CLOSED notification
   virtual void SetClosedByUserGesture(bool value) = 0;
   virtual bool GetClosedByUserGesture() const = 0;
 
   // Opens view-source tab for this contents.
   virtual void ViewSource() = 0;
 
   virtual void ViewFrameSource(const GURL& url,
-                               const PageState& page_state)= 0;
+                               const PageState& page_state) = 0;
 
   // Gets the minimum/maximum zoom percent.
   virtual int GetMinimumZoomPercent() const = 0;
   virtual int GetMaximumZoomPercent() const = 0;
 
   // Set the renderer's page scale back to one.
   virtual void ResetPageScale() = 0;
 
   // Gets the preferred size of the contents.
   virtual gfx::Size GetPreferredSize() const = 0;
@@ skipping 78 matching lines @@
   // Requests the renderer to exit fullscreen.
   virtual void ExitFullscreen() = 0;
 
   // Unblocks requests from renderer for a newly created window. This is
   // used in showCreatedWindow() or sometimes later in cases where
   // delegate->ShouldResumeRequestsForCreatedWindow() indicated the requests
   // should not yet be resumed. Then the client is responsible for calling this
   // as soon as they are ready.
   virtual void ResumeLoadingCreatedWebContents() = 0;
 
+  // Called when MediaSession changes any of its state.
+  virtual void OnMediaSessionStateChanged() = 0;
+  // Requests to resume the current media session.
+  virtual void ResumeMediaSession() = 0;
+  // Requests to suspend the current media session.
+  virtual void SuspendMediaSession() = 0;
+
 #if defined(OS_ANDROID)
   CONTENT_EXPORT static WebContents* FromJavaWebContents(
       jobject jweb_contents_android);
   virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents() = 0;
 #elif defined(OS_MACOSX)
   // Allowing other views disables optimizations which assume that only a single
   // WebContents is present.
   virtual void SetAllowOtherViews(bool allow) = 0;
 
   // Returns true if other views are allowed, false otherwise.
   virtual bool GetAllowOtherViews() = 0;
 #endif  // OS_ANDROID
 
  private:
   // This interface should only be implemented inside content.
   friend class WebContentsImpl;
   WebContents() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_