Implement device enumeration for PPB_VideoCapture_Dev.

webkit/plugins/ppapi/mock_plugin_delegate.h

Index: webkit/plugins/ppapi/mock_plugin_delegate.h
diff --git a/webkit/plugins/ppapi/mock_plugin_delegate.h b/webkit/plugins/ppapi/mock_plugin_delegate.h
index fbd961a23bf779cb8eaca65dad21336ea76ce521..d9cb34ee11131c8692805b1cc43afe400b46bd4d 100644
--- a/webkit/plugins/ppapi/mock_plugin_delegate.h
+++ b/webkit/plugins/ppapi/mock_plugin_delegate.h
@@ -31,7 +31,8 @@ class MockPluginDelegate : public PluginDelegate {
       media::VideoDecodeAccelerator::Client* client,
       int32 command_buffer_route_id);
   virtual PlatformVideoCapture* CreateVideoCapture(
-      media::VideoCapture::EventHandler* handler);
+      const std::string& device_id,
+      PlatformVideoCaptureEventHandler* handler);
   virtual PlatformAudio* CreateAudio(uint32_t sample_rate,
                                      uint32_t sample_count,
                                      PlatformAudioCommonClient* client);
@@ -156,6 +157,8 @@ class MockPluginDelegate : public PluginDelegate {
   virtual void SampleGamepads(WebKit::WebGamepads* data) OVERRIDE;
   virtual bool IsInFullscreenMode();
   virtual bool IsPageVisible() const;
+  virtual int EnumerateDevices(PP_DeviceType_Dev type,
+                               const EnumerateDevicesCallback& callback);
 };
 
 }  // namespace ppapi