NOT FOR LANDING Introduce and use WebMediaSession

public/web/WebFrameClient.h

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 57 matching lines @@
 class WebCookieJar;
 class WebDataSource;
 class WebEncryptedMediaClient;
 class WebExternalPopupMenu;
 class WebExternalPopupMenuClient;
 class WebFormElement;
 class WebGeolocationClient;
 class WebMediaPlayer;
 class WebMediaPlayerClient;
 class WebMediaPlayerEncryptedMediaClient;
+class WebMediaSession;
 class WebMIDIClient;
 class WebNotificationPermissionCallback;
 class WebPermissionClient;
 class WebServiceWorkerProvider;
 class WebSocketHandle;
 class WebPlugin;
 class WebPluginPlaceholder;
 class WebPresentationClient;
 class WebPushClient;
 class WebRTCPeerConnectionHandler;
@@ skipping 22 matching lines @@
     virtual WebPluginPlaceholder* createPluginPlaceholder(WebLocalFrame*, const WebPluginParams&) { return 0; }
 
     // May return null.
     virtual WebPlugin* createPlugin(WebLocalFrame*, const WebPluginParams&) { return 0; }
 
     // May return null.
     // WebContentDecryptionModule* may be null if one has not yet been set.
     virtual WebMediaPlayer* createMediaPlayer(WebLocalFrame*, const WebURL&, WebMediaPlayerClient*, WebMediaPlayerEncryptedMediaClient*, WebContentDecryptionModule*) { return 0; }
 
     // May return null.
+    virtual WebMediaSession* createMediaSession(WebLocalFrame*) { return 0; }
+
+    // May return null.
     virtual WebApplicationCacheHost* createApplicationCacheHost(WebLocalFrame*, WebApplicationCacheHostClient*) { return 0; }
 
     // May return null.
     virtual WebServiceWorkerProvider* createServiceWorkerProvider(WebLocalFrame* frame) { return 0; }
 
     // May return null.
     virtual WebWorkerContentSettingsClientProxy* createWorkerContentSettingsClientProxy(WebLocalFrame* frame) { return 0; }
 
     // Create a new WebPopupMenu. In the "createExternalPopupMenu" form, the
     // client is responsible for rendering the contents of the popup menu.
@@ skipping 543 matching lines @@
     // WebUSB --------------------------------------------------------------
     virtual WebUSBClient* usbClient() { return nullptr; }
 
 protected:
     virtual ~WebFrameClient() { }
 };
 
 } // namespace blink
 
 #endif