Move IDMap back to base/ where it is needed.

chrome/renderer/audio_message_filter.h

 // Copyright (c) 2009 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.
 //
 // MessageFilter that handles audio messages and delegates them to audio
 // renderers. Created on render thread, AudioMessageFilter is operated on
 // IO thread (main thread of render process), it intercepts audio messages
 // and process them on IO thread since these messages are time critical.
 
 #ifndef CHROME_RENDERER_AUDIO_MESSAGE_FILTER_H_
 #define CHROME_RENDERER_AUDIO_MESSAGE_FILTER_H_
 
+#include "base/id_map.h"
 #include "base/shared_memory.h"
-#include "chrome/common/id_map.h"
 #include "chrome/common/render_messages.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "testing/gtest/include/gtest/gtest_prod.h"
 
 class AudioMessageFilter : public IPC::ChannelProxy::MessageFilter {
  public:
   class Delegate {
    public:
     // Called when an audio packet is requested from the browser process.
     virtual void OnRequestPacket(size_t bytes_in_buffer,
@@ skipping 55 matching lines @@
   IPC::Channel* channel_;
 
   int32 route_id_;
 
   MessageLoop* message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioMessageFilter);
 };
 
 #endif  // CHROME_RENDERER_AUDIO_MESSAGE_FITLER_H_