Use a mock WebAudioDevice for layout tests

content/shell/renderer/shell_content_renderer_client.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_SHELL_SHELL_CONTENT_RENDERER_CLIENT_H_
 #define CONTENT_SHELL_SHELL_CONTENT_RENDERER_CLIENT_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/platform_file.h"
@@ skipping 36 matching lines @@
       WebKit::WebFrame* frame,
       const WebKit::WebPluginParams& params,
       WebKit::WebPlugin** plugin) OVERRIDE;
   virtual WebKit::WebMediaStreamCenter* OverrideCreateWebMediaStreamCenter(
       WebKit::WebMediaStreamCenterClient* client) OVERRIDE;
   virtual WebKit::WebRTCPeerConnectionHandler*
   OverrideCreateWebRTCPeerConnectionHandler(
       WebKit::WebRTCPeerConnectionHandlerClient* client) OVERRIDE;
   virtual WebKit::WebMIDIAccessor* OverrideCreateMIDIAccessor(
       WebKit::WebMIDIAccessorClient* client) OVERRIDE;
+  virtual WebKit::WebAudioDevice* OverrideCreateAudioDevice(
+      double sample_rate) OVERRIDE;
   virtual WebKit::WebClipboard* OverrideWebClipboard() OVERRIDE;
   virtual WebKit::WebHyphenator* OverrideWebHyphenator() OVERRIDE;
   virtual WebKit::WebThemeEngine* OverrideThemeEngine() OVERRIDE;
   virtual bool AllowBrowserPlugin(
       WebKit::WebPluginContainer* container) const OVERRIDE;
 
  private:
    void WebTestProxyCreated(RenderView* render_view,
                             WebTestRunner::WebTestProxyBase* proxy);
 
   scoped_ptr<ShellRenderProcessObserver> shell_observer_;
   scoped_ptr<MockWebClipboardImpl> clipboard_;
   scoped_ptr<webkit_glue::MockWebHyphenator> hyphenator_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_CONTENT_RENDERER_CLIENT_H_