Use rtc::scoped_refptr for WebRtcVideoCapturer.

webrtc/media/engine/webrtcvideocapturer.cc

Index: webrtc/media/engine/webrtcvideocapturer.cc
diff --git a/webrtc/media/engine/webrtcvideocapturer.cc b/webrtc/media/engine/webrtcvideocapturer.cc
index a1848e933c82a6e0e2ca26865e839c4d06c6eeb0..e175688e169f833860059199d3c4541f9dd0c022 100644
--- a/webrtc/media/engine/webrtcvideocapturer.cc
+++ b/webrtc/media/engine/webrtcvideocapturer.cc
@@ -52,7 +52,9 @@ static kVideoFourCCEntry kSupportedFourCCs[] = {
 
 class WebRtcVcmFactory : public WebRtcVcmFactoryInterface {
  public:
-  virtual webrtc::VideoCaptureModule* Create(int id, const char* device) {
+  virtual rtc::scoped_refptr<webrtc::VideoCaptureModule> Create(
+      int id,
+      const char* device) {
     return webrtc::VideoCaptureFactory::Create(id, device);
   }
   virtual webrtc::VideoCaptureModule::DeviceInfo* CreateDeviceInfo(int id) {
@@ -128,11 +130,7 @@ WebRtcVideoCapturer::WebRtcVideoCapturer(WebRtcVcmFactoryInterface* factory)
   set_frame_factory(new WebRtcVideoFrameFactory());
 }
 
-WebRtcVideoCapturer::~WebRtcVideoCapturer() {
-  if (module_) {
-    module_->Release();
-  }
-}
+WebRtcVideoCapturer::~WebRtcVideoCapturer() {}
 
 bool WebRtcVideoCapturer::Init(const Device& device) {
   RTC_DCHECK(!start_thread_);
@@ -198,14 +196,14 @@ bool WebRtcVideoCapturer::Init(const Device& device) {
   }
 
   // It is safe to change member attributes now.
-  module_->AddRef();
   SetId(device.id);
   SetSupportedFormats(supported);
 
   return true;
 }
 
-bool WebRtcVideoCapturer::Init(webrtc::VideoCaptureModule* module) {
+bool WebRtcVideoCapturer::Init(
+    const rtc::scoped_refptr<webrtc::VideoCaptureModule>& module) {
   RTC_DCHECK(!start_thread_);
   if (module_) {
     LOG(LS_ERROR) << "The capturer is already initialized";
@@ -216,7 +214,7 @@ bool WebRtcVideoCapturer::Init(webrtc::VideoCaptureModule* module) {
     return false;
   }
   // TODO(juberti): Set id and formats.
-  (module_ = module)->AddRef();
+  module_ = module;
   return true;
 }