Revert of content/common: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/common/mojo/channel_init.h

 // Copyright 2015 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.
 
 #ifndef CONTENT_COMMON_MOJO_CHANNEL_INIT_H_
 #define CONTENT_COMMON_MOJO_CHANNEL_INIT_H_
 
 #include "base/files/file.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
 #include "ipc/mojo/scoped_ipc_support.h"
 #include "third_party/mojo/src/mojo/edk/embedder/channel_info_forward.h"
 #include "third_party/mojo/src/mojo/public/cpp/system/message_pipe.h"
 
 namespace base {
+class MessageLoopProxy;
 class TaskRunner;
 }
 
 namespace content {
 
 // ChannelInit handles creation and destruction of the Mojo channel. It is not
 // thread-safe, but may be used on any single thread with a MessageLoop.
 class CONTENT_EXPORT ChannelInit {
  public:
   ChannelInit();
@@ skipping 25 matching lines @@
 
   scoped_ptr<IPC::ScopedIPCSupport> ipc_support_;
   base::WeakPtrFactory<ChannelInit> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChannelInit);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_MOJO_CHANNEL_INIT_H_