Adding new media controls to MediaNotification

content/browser/web_contents/web_contents_impl.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_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 413 matching lines @@
   base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents() override;
   virtual WebContentsAndroid* GetWebContentsAndroid();
   void ActivateNearestFindResult(float x, float y) override;
   void RequestFindMatchRects(int current_version) override;
   service_manager::InterfaceProvider* GetJavaInterfaces() override;
 #elif defined(OS_MACOSX)
   void SetAllowOtherViews(bool allow) override;
   bool GetAllowOtherViews() override;
 #endif
 
+  // TODO(zqzhang): Decouple MediaSession messages from WebContents to avoid
+  // plumbing. See https://crbug.com/658678
+  //
   // This method is called when the MediaSession state has changed, and will
   // notify the WebContents observers.
   void OnMediaSessionStateChanged();
   // This method is called when the MediaSession metadata has changed, and will
   // notify the WebContents observers.
   void OnMediaSessionMetadataChanged();
+  // This method is called when the MediaSession has enabled an action, and will
+  // notify the WebContentsObservers.
+  void OnMediaSessionEnabledAction(blink::mojom::MediaSessionAction action);
+  // This method is called when the MediaSession has disabled an action, and
+  // will
+  // notify the WebContentsObservers.
+  void OnMediaSessionDisabledAction(blink::mojom::MediaSessionAction action);
+  // Tell the media session a user action has performed.
+  void DidReceiveMediaSessionAction(
+      blink::mojom::MediaSessionAction action);
 
   // Implementation of PageNavigator.
   WebContents* OpenURL(const OpenURLParams& params) override;
 
   // Implementation of IPC::Sender.
   bool Send(IPC::Message* message) override;
 
   // RenderFrameHostDelegate ---------------------------------------------------
   bool OnMessageReceived(RenderFrameHost* render_frame_host,
                          const IPC::Message& message) override;
@@ skipping 1009 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_