NOT FOR LANDING Introduce and use WebMediaSession

Source/core/loader/EmptyClients.cpp

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 20 matching lines @@
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLFormElement.h"
 #include "core/html/forms/ColorChooser.h"
 #include "core/html/forms/DateTimeChooser.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/plugins/PluginPlaceholder.h"
 #include "platform/FileChooser.h"
 #include "platform/Widget.h"
 #include "public/platform/WebApplicationCacheHost.h"
 #include "public/platform/WebMediaPlayer.h"
+#include "public/platform/WebMediaSession.h"
 #include "public/platform/WebServiceWorkerProvider.h"
 #include "public/platform/WebServiceWorkerProviderClient.h"
 
 namespace blink {
 
 void fillWithEmptyClients(Page::PageClients& pageClients)
 {
     static ChromeClient* dummyChromeClient = adoptPtr(new EmptyChromeClient).leakPtr();
     pageClients.chromeClient = dummyChromeClient;
 
@@ skipping 82 matching lines @@
 PassRefPtrWillBeRawPtr<Widget> EmptyFrameLoaderClient::createJavaAppletWidget(HTMLAppletElement*, const KURL&, const Vector<String>&, const Vector<String>&)
 {
     return nullptr;
 }
 
 PassOwnPtr<WebMediaPlayer> EmptyFrameLoaderClient::createWebMediaPlayer(HTMLMediaElement&, const WebURL&, WebMediaPlayerClient*)
 {
     return nullptr;
 }
 
+PassOwnPtr<WebMediaSession> EmptyFrameLoaderClient::createWebMediaSession()
+{
+    return nullptr;
+}
+
 void EmptyTextCheckerClient::requestCheckingOfString(PassRefPtrWillBeRawPtr<TextCheckingRequest>)
 {
 }
 
 void EmptyFrameLoaderClient::didRequestAutocomplete(HTMLFormElement*)
 {
 }
 
 v8::Local<v8::Value> EmptyFrameLoaderClient::createTestInterface(const AtomicString& name)
 {
     return v8::Local<v8::Value>();
 }
 
 PassOwnPtr<WebServiceWorkerProvider> EmptyFrameLoaderClient::createServiceWorkerProvider()
 {
     return nullptr;
 }
 
 PassOwnPtr<WebApplicationCacheHost> EmptyFrameLoaderClient::createApplicationCacheHost(WebApplicationCacheHostClient*)
 {
     return nullptr;
 }
 
 } // namespace blink