Use rtc::scoped_refptr for WebRtcVideoCapturer.

webrtc/media/engine/webrtcvideocapturer.h

Index: webrtc/media/engine/webrtcvideocapturer.h
diff --git a/webrtc/media/engine/webrtcvideocapturer.h b/webrtc/media/engine/webrtcvideocapturer.h
index a76f9dc8fcd9d17fdfa11b8cf179addec39501b7..b6b39386c1b6c5cade252753b626a5393ab23cdd 100644
--- a/webrtc/media/engine/webrtcvideocapturer.h
+++ b/webrtc/media/engine/webrtcvideocapturer.h
@@ -17,6 +17,7 @@
 
 #include "webrtc/base/asyncinvoker.h"
 #include "webrtc/base/messagehandler.h"
+#include "webrtc/base/scoped_ref_ptr.h"
 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
 #include "webrtc/media/base/device.h"
 #include "webrtc/media/base/videocapturer.h"
@@ -30,8 +31,9 @@ namespace cricket {
 class WebRtcVcmFactoryInterface {
  public:
   virtual ~WebRtcVcmFactoryInterface() {}
-  virtual webrtc::VideoCaptureModule* Create(
-      int id, const char* device) = 0;
+  virtual rtc::scoped_refptr<webrtc::VideoCaptureModule> Create(
+      int id,
+      const char* device) = 0;
   virtual webrtc::VideoCaptureModule::DeviceInfo* CreateDeviceInfo(int id) = 0;
   virtual void DestroyDeviceInfo(
       webrtc::VideoCaptureModule::DeviceInfo* info) = 0;
@@ -46,7 +48,7 @@ class WebRtcVideoCapturer : public VideoCapturer,
   virtual ~WebRtcVideoCapturer();
 
   bool Init(const Device& device);
-  bool Init(webrtc::VideoCaptureModule* module);
+  bool Init(const rtc::scoped_refptr<webrtc::VideoCaptureModule>& module);
 
   // Override virtual methods of the parent class VideoCapturer.
   bool GetBestCaptureFormat(const VideoFormat& desired,
@@ -77,7 +79,7 @@ class WebRtcVideoCapturer : public VideoCapturer,
   void SignalFrameCapturedOnStartThread(const webrtc::VideoFrame& frame);
 
   std::unique_ptr<WebRtcVcmFactoryInterface> factory_;
-  webrtc::VideoCaptureModule* module_;
+  rtc::scoped_refptr<webrtc::VideoCaptureModule> module_;
   int captured_frames_;
   std::vector<uint8_t> capture_buffer_;
   rtc::Thread* start_thread_;  // Set in Start(), unset in Stop();