Convert //ppapi to use std::unique_ptr

ppapi/proxy/media_stream_track_resource_base.cc

Index: ppapi/proxy/media_stream_track_resource_base.cc
diff --git a/ppapi/proxy/media_stream_track_resource_base.cc b/ppapi/proxy/media_stream_track_resource_base.cc
index 16d549947a406da978c153ee540575ca6e79d7e5..4e20325f9a593adef78821347db6c00a53f5e2e6 100644
--- a/ppapi/proxy/media_stream_track_resource_base.cc
+++ b/ppapi/proxy/media_stream_track_resource_base.cc
@@ -73,9 +73,9 @@ void MediaStreamTrackResourceBase::OnPluginMsgInitBuffers(
   base::SharedMemoryHandle shm_handle = base::SharedMemory::NULLHandle();
   params.TakeSharedMemoryHandleAtIndex(0, &shm_handle);
   buffer_manager_.SetBuffers(number_of_buffers, buffer_size,
-      scoped_ptr<base::SharedMemory>(new base::SharedMemory(shm_handle,
-                                                            readonly)),
-      false);
+                             std::unique_ptr<base::SharedMemory>(
+                                 new base::SharedMemory(shm_handle, readonly)),
+                             false);
 }
 
 void MediaStreamTrackResourceBase::OnPluginMsgEnqueueBuffer(