Update MockWebUserMediaClient for requestSources.

content/shell/renderer/test_runner/mock_web_user_media_client.h

Index: content/shell/renderer/test_runner/mock_web_user_media_client.h
diff --git a/content/shell/renderer/test_runner/mock_web_user_media_client.h b/content/shell/renderer/test_runner/mock_web_user_media_client.h
index d7fd4ed8fe00d9ca74baf43b2314a60396274fb4..2845118ac13a7d059992dfe055d99f9b3cd1eee1 100644
--- a/content/shell/renderer/test_runner/mock_web_user_media_client.h
+++ b/content/shell/renderer/test_runner/mock_web_user_media_client.h
@@ -18,13 +18,11 @@ class MockWebUserMediaClient : public blink::WebUserMediaClient {
   explicit MockWebUserMediaClient(WebTestDelegate* delegate);
   virtual ~MockWebUserMediaClient() {}
 
-  virtual void requestUserMedia(const blink::WebUserMediaRequest&) OVERRIDE;
-  virtual void cancelUserMediaRequest(
-      const blink::WebUserMediaRequest&) OVERRIDE;
-  virtual void requestMediaDevices(
-      const blink::WebMediaDevicesRequest&) OVERRIDE;
-  virtual void cancelMediaDevicesRequest(
-      const blink::WebMediaDevicesRequest&) OVERRIDE;
+  virtual void requestUserMedia(const blink::WebUserMediaRequest&);
+  virtual void cancelUserMediaRequest(const blink::WebUserMediaRequest&);
+  virtual void requestMediaDevices(const blink::WebMediaDevicesRequest&);
+  virtual void cancelMediaDevicesRequest(const blink::WebMediaDevicesRequest&);
+  virtual void requestSources(const blink::WebMediaStreamTrackSourcesRequest&);
 
   // Task related methods
   WebTaskList* mutable_task_list() { return &task_list_; }