Adds Channel-associated interface support on ChannelProxy's thread

ipc/ipc_channel_mojo.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ipc/ipc_channel_mojo.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 480 matching lines @@
   DCHECK(result.second);
 }
 
 void ChannelMojo::GetGenericRemoteAssociatedInterface(
     const std::string& name,
     mojo::ScopedInterfaceEndpointHandle handle) {
   DCHECK(message_reader_);
   message_reader_->GetRemoteInterface(name, std::move(handle));
 }
 
+void ChannelMojo::SetProxyTaskRunner(
+    scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
+  DCHECK(bootstrap_);
+  bootstrap_->SetProxyTaskRunner(task_runner);
+}
+
 }  // namespace IPC