Use a mock WebAudioDevice for layout tests

content/public/renderer/content_renderer_client.cc

 // 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.
 
 #include "content/public/renderer/content_renderer_client.h"
 
 namespace content {
 
 SkBitmap* ContentRendererClient::GetSadPluginBitmap() {
   return NULL;
@@ skipping 42 matching lines @@
     WebKit::WebRTCPeerConnectionHandlerClient* client) {
   return NULL;
 }
 
 WebKit::WebMIDIAccessor*
 ContentRendererClient::OverrideCreateMIDIAccessor(
     WebKit::WebMIDIAccessorClient* client) {
   return NULL;
 }
 
+WebKit::WebAudioDevice*
+ContentRendererClient::OverrideCreateAudioDevice(
+    double sample_rate) {
+  return NULL;
+}
+
 WebKit::WebClipboard* ContentRendererClient::OverrideWebClipboard() {
   return NULL;
 }
 
 WebKit::WebHyphenator* ContentRendererClient::OverrideWebHyphenator() {
   return NULL;
 }
 
 WebKit::WebThemeEngine* ContentRendererClient::OverrideThemeEngine() {
   return NULL;
@@ skipping 87 matching lines @@
 bool ContentRendererClient::AllowBrowserPlugin(
     WebKit::WebPluginContainer* container) const {
   return false;
 }
 
 bool ContentRendererClient::AllowPepperMediaStreamAPI(const GURL& url) const {
   return false;
 }
 
 }  // namespace content