Fix memory leak in vcm_capturer.cc.

webrtc/test/vcm_capturer.cc

Index: webrtc/test/vcm_capturer.cc
diff --git a/webrtc/test/vcm_capturer.cc b/webrtc/test/vcm_capturer.cc
index 0a82236c9880487968c147938ecca7c8b83f26f9..b2f6f559178cb58041c10d4646b42feabb07f184 100644
--- a/webrtc/test/vcm_capturer.cc
+++ b/webrtc/test/vcm_capturer.cc
@@ -34,6 +34,8 @@ bool VcmCapturer::Init(size_t width, size_t height, size_t target_fps) {
   }
 
   vcm_ = webrtc::VideoCaptureFactory::Create(0, unique_name);
+  vcm_->AddRef();

[pbos-webrtc, 2015/11/26 17:12:12]

Shouldn't this be done inside ::Create() maybe? Creating it should imply that
you hold a reference to it.

+
   vcm_->RegisterCaptureDataCallback(*this);
 
   device_info->GetCapability(vcm_->CurrentDeviceName(), 0, capability_);
@@ -87,8 +89,6 @@ void VcmCapturer::Destroy() {
   vcm_->DeRegisterCaptureDataCallback();
   vcm_->Release();
 
-  // TODO(pbos): How do I destroy the VideoCaptureModule? This still leaves
-  //             non-freed memory.
   vcm_ = NULL;
 }