Introduce IPC::ChannelProxy::Create*() and IPC::SynChannel::Create*()

content/common/gpu/client/gpu_channel_host.cc

Index: content/common/gpu/client/gpu_channel_host.cc
diff --git a/content/common/gpu/client/gpu_channel_host.cc b/content/common/gpu/client/gpu_channel_host.cc
index f503051fb162ee42d3f8ab442de42edc47265fdb..3a12f860303f9182c91ca53cfc6f96f24e1c81c2 100644
--- a/content/common/gpu/client/gpu_channel_host.cc
+++ b/content/common/gpu/client/gpu_channel_host.cc
@@ -73,12 +73,8 @@ void GpuChannelHost::Connect(const IPC::ChannelHandle& channel_handle,
   // Open a channel to the GPU process. We pass NULL as the main listener here
   // since we need to filter everything to route it to the right thread.
   scoped_refptr<base::MessageLoopProxy> io_loop = factory_->GetIOLoopProxy();
-  channel_.reset(new IPC::SyncChannel(channel_handle,
-                                      IPC::Channel::MODE_CLIENT,
-                                      NULL,
-                                      io_loop.get(),
-                                      true,
-                                      shutdown_event));
+  channel_ = IPC::SyncChannel::CreateClient(
+      channel_handle, NULL, io_loop.get(), true, shutdown_event);
 
   sync_filter_ = new IPC::SyncMessageFilter(shutdown_event);