Update Bind to match its comments and always capture by value.

talk/media/webrtc/webrtcvideocapturer.h

 /*
  * libjingle
  * Copyright 2004 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 74 matching lines @@
                                        const webrtc::VideoFrame& frame);
   virtual void OnCaptureDelayChanged(const int32_t id,
                                      const int32_t delay);
 
   // Used to signal captured frames on the same thread as invoked Start().
   // With WebRTC's current VideoCapturer implementations, this will mean a
   // thread hop, but in other implementations (e.g. Chrome) it will be called
   // directly from OnIncomingCapturedFrame.
   // TODO(tommi): Remove this workaround when we've updated the WebRTC capturers
   // to follow the same contract.
-  void SignalFrameCapturedOnStartThread(const webrtc::VideoFrame frame);
+  void SignalFrameCapturedOnStartThread(const webrtc::VideoFrame& frame);
 
   rtc::scoped_ptr<WebRtcVcmFactoryInterface> factory_;
   webrtc::VideoCaptureModule* module_;
   int captured_frames_;
   std::vector<uint8_t> capture_buffer_;
   rtc::Thread* start_thread_;  // Set in Start(), unset in Stop();
 
   rtc::scoped_ptr<rtc::AsyncInvoker> async_invoker_;
 };
 
 struct WebRtcCapturedFrame : public CapturedFrame {
  public:
   WebRtcCapturedFrame(const webrtc::VideoFrame& frame,
                       void* buffer,
                       size_t length);
 };
 
 }  // namespace cricket
 
 #endif  // HAVE_WEBRTC_VIDEO
 #endif  // TALK_MEDIA_WEBRTCVIDEOCAPTURER_H_