Replace scoped_ptr with unique_ptr in webrtc/media/

webrtc/media/engine/webrtcvideocapturer_unittest.cc

Index: webrtc/media/engine/webrtcvideocapturer_unittest.cc
diff --git a/webrtc/media/engine/webrtcvideocapturer_unittest.cc b/webrtc/media/engine/webrtcvideocapturer_unittest.cc
index 6d88bcc8ec8cc178c9da42f1fb947e68983f6c87..23d730696e50ac9e39da2e27688387c9a879bfac 100644
--- a/webrtc/media/engine/webrtcvideocapturer_unittest.cc
+++ b/webrtc/media/engine/webrtcvideocapturer_unittest.cc
@@ -11,7 +11,10 @@
 #ifdef HAVE_WEBRTC_VIDEO
 
 #include <stdio.h>
+
+#include <memory>
 #include <vector>
+
 #include "webrtc/base/gunit.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/base/stringutils.h"
@@ -46,7 +49,7 @@ class WebRtcVideoCapturerTest : public testing::Test {
 
  protected:
   FakeWebRtcVcmFactory* factory_;  // owned by capturer_
-  rtc::scoped_ptr<cricket::WebRtcVideoCapturer> capturer_;
+  std::unique_ptr<cricket::WebRtcVideoCapturer> capturer_;
   cricket::VideoCapturerListener listener_;
 };