Marked IPC::ChannelProxy as non thread-safe. Added DCHECKs to verify that all public IPC::ChannelPr…

ipc/ipc_channel_proxy.h

 // Copyright (c) 2012 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 IPC_IPC_CHANNEL_PROXY_H_
 #define IPC_IPC_CHANNEL_PROXY_H_
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
+#include "base/threading/non_thread_safe.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace IPC {
@@ skipping 21 matching lines @@
 // An IPC::ChannelProxy can have a MessageFilter associated with it, which will
 // be notified of incoming messages on the IPC::Channel's thread.  This gives
 // the consumer of IPC::ChannelProxy the ability to respond to incoming
 // messages on this background thread instead of on their own thread, which may
 // be bogged down with other processing.  The result can be greatly improved
 // latency for messages that can be handled on a background thread.
 //
 // The consumer of IPC::ChannelProxy is responsible for allocating the Thread
 // instance where the IPC::Channel will be created and operated.
 //
-class IPC_EXPORT ChannelProxy : public Sender {
+class IPC_EXPORT ChannelProxy : public Sender, public base::NonThreadSafe {
  public:
   struct MessageFilterTraits;
 
   // A class that receives messages on the thread where the IPC channel is
   // running.  It can choose to prevent the default action for an IPC message.
   class IPC_EXPORT MessageFilter
       : public base::RefCountedThreadSafe<MessageFilter, MessageFilterTraits> {
    public:
     MessageFilter();
 
@@ skipping 218 matching lines @@
 
   OutgoingMessageFilter* outgoing_message_filter_;
 
   // Whether the channel has been initialized.
   bool did_init_;
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_CHANNEL_PROXY_H_