Add IPC::ChannelProxy::Create() and IPC::SyncChannel::Create()

ppapi/proxy/proxy_channel.cc

Index: ppapi/proxy/proxy_channel.cc
diff --git a/ppapi/proxy/proxy_channel.cc b/ppapi/proxy/proxy_channel.cc
index c1f48de6b4298296fb4bc8bd5acfa9cc96b8a3d9..7a7dfaa469e086a6c4fba7bc8010ee2123eeb26f 100644
--- a/ppapi/proxy/proxy_channel.cc
+++ b/ppapi/proxy/proxy_channel.cc
@@ -31,11 +31,12 @@ bool ProxyChannel::InitWithChannel(Delegate* delegate,
                                    bool is_client) {
   delegate_ = delegate;
   peer_pid_ = peer_pid;
-  IPC::Channel::Mode mode = is_client ? IPC::Channel::MODE_CLIENT
-                                      : IPC::Channel::MODE_SERVER;
-  channel_.reset(new IPC::SyncChannel(channel_handle, mode, this,
+  IPC::Channel::Mode mode = is_client
+      ? IPC::Channel::MODE_CLIENT
+      : IPC::Channel::MODE_SERVER;
+  channel_ = IPC::SyncChannel::Create(channel_handle, mode, this,
                                       delegate->GetIPCMessageLoop(), true,
-                                      delegate->GetShutdownEvent()));
+                                      delegate->GetShutdownEvent());
   return true;
 }