Use a mock WebAudioDevice for layout tests

content/public/renderer/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_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 #define CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 
 #include <string>
 
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/page_transition_types.h"
 #include "ipc/ipc_message.h"
 #include "third_party/WebKit/public/web/WebNavigationPolicy.h"
 #include "third_party/WebKit/public/web/WebNavigationType.h"
 #include "third_party/WebKit/public/web/WebPageVisibilityState.h"
 #include "v8/include/v8.h"
 
 class GURL;
 class SkBitmap;
 
 namespace base {
 class FilePath;
 class MessageLoop;
 }
 
 namespace WebKit {
+class WebAudioDevice;
 class WebClipboard;
 class WebFrame;
 class WebHyphenator;
 class WebMIDIAccessor;
 class WebMIDIAccessorClient;
 class WebMediaStreamCenter;
 class WebMediaStreamCenterClient;
 class WebPlugin;
 class WebPluginContainer;
 class WebPrescientNetworking;
@@ skipping 95 matching lines @@
   // it returns NULL the content layer will create the connection handler.
   virtual WebKit::WebRTCPeerConnectionHandler*
   OverrideCreateWebRTCPeerConnectionHandler(
       WebKit::WebRTCPeerConnectionHandlerClient* client);
 
   // Allows the embedder to override creating a WebMIDIAccessor.  If it
   // returns NULL the content layer will create the MIDI accessor.
   virtual WebKit::WebMIDIAccessor* OverrideCreateMIDIAccessor(
       WebKit::WebMIDIAccessorClient* client);
 
+  // Allows the embedder to override creating a WebAudioDevice.  If it
+  // returns NULL the content layer will create the audio device.
+  virtual WebKit::WebAudioDevice* OverrideCreateAudioDevice(
+      double sample_rate);
+
   // Allows the embedder to override the WebKit::WebClipboard used. If it
   // returns NULL the content layer will handle clipboard interactions.
   virtual WebKit::WebClipboard* OverrideWebClipboard();
 
   // Allows the embedder to override the WebKit::WebHyphenator used. If it
   // returns NULL the content layer will handle hyphenation.
   virtual WebKit::WebHyphenator* OverrideWebHyphenator();
 
   // Allows the embedder to override the WebThemeEngine used. If it returns NULL
   // the content layer will provide an engine.
@@ skipping 83 matching lines @@
   // Returns whether BrowserPlugin should be allowed within the |container|.
   virtual bool AllowBrowserPlugin(WebKit::WebPluginContainer* container) const;
 
   // Returns true if the page at |url| can use Pepper MediaStream APIs.
   virtual bool AllowPepperMediaStreamAPI(const GURL& url) const;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_