Introduce ChannelMojo

ipc/ipc_sync_channel.h

Index: ipc/ipc_sync_channel.h
diff --git a/ipc/ipc_sync_channel.h b/ipc/ipc_sync_channel.h
index 8984184da293ae81508293db635a12c4b6bac164..f8207ce1e3e4739296bbb4e144a38b018db62f25 100644
--- a/ipc/ipc_sync_channel.h
+++ b/ipc/ipc_sync_channel.h
@@ -23,6 +23,7 @@ class WaitableEvent;
 namespace IPC {
 
 class SyncMessage;
+class ChannelFactory;
 
 // This is similar to ChannelProxy, with the added feature of supporting sending
 // synchronous messages.
@@ -75,6 +76,13 @@ class IPC_EXPORT SyncChannel : public ChannelProxy {
       bool create_pipe_now,
       base::WaitableEvent* shutdown_event);
 
+  static scoped_ptr<SyncChannel> Create(
+      scoped_ptr<ChannelFactory> factory,
+      Listener* listener,
+      base::SingleThreadTaskRunner* ipc_task_runner,
+      bool create_pipe_now,
+      base::WaitableEvent* shutdown_event);
+
   // Creates an uninitialized sync channel. Call ChannelProxy::Init to
   // initialize the channel. This two-step setup allows message filters to be
   // added before any messages are sent or received.