Switching some interfaces to use std::unique_ptr<>.

webrtc/pc/rtcstatscollector_unittest.cc

Index: webrtc/pc/rtcstatscollector_unittest.cc
diff --git a/webrtc/pc/rtcstatscollector_unittest.cc b/webrtc/pc/rtcstatscollector_unittest.cc
index 715da567abbdb98fb7f5f8ccb7238559e9fcd779..adace3f4dda75630ede92567d1ab4ce03b200cae 100644
--- a/webrtc/pc/rtcstatscollector_unittest.cc
+++ b/webrtc/pc/rtcstatscollector_unittest.cc
@@ -277,9 +277,10 @@ class RTCStatsCollectorTestHelper : public SetSessionDescriptionObserver {
         network_thread_(rtc::Thread::Current()),
         signaling_thread_(rtc::Thread::Current()),
         media_engine_(new cricket::FakeMediaEngine()),
-        channel_manager_(new cricket::ChannelManager(media_engine_,
-                                                     worker_thread_,
-                                                     network_thread_)),
+        channel_manager_(new cricket::ChannelManager(
+            std::unique_ptr<cricket::MediaEngineInterface>(media_engine_),
+            worker_thread_,
+            network_thread_)),
         media_controller_(
             MediaControllerInterface::Create(cricket::MediaConfig(),
                                              worker_thread_,
@@ -489,6 +490,7 @@ class RTCStatsCollectorTestHelper : public SetSessionDescriptionObserver {
   rtc::Thread* const worker_thread_;
   rtc::Thread* const network_thread_;
   rtc::Thread* const signaling_thread_;
+  // |media_engine_| is actually owned by |channel_manager_|.
   cricket::FakeMediaEngine* media_engine_;
   std::unique_ptr<cricket::ChannelManager> channel_manager_;
   std::unique_ptr<MediaControllerInterface> media_controller_;