FBTF: Remove unneeded headers from base/ (part 2)

chrome/browser/renderer_host/audio_renderer_host.h

 // Copyright (c) 2010 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.
 //
 // AudioRendererHost serves audio related requests from AudioRenderer which
 // lives inside the render process and provide access to audio hardware.
 //
 // This class is owned by BrowserRenderProcessHost, and instantiated on UI
 // thread, but all other operations and method calls (except Destroy()) happens
 // in IO thread, so we need to be extra careful about the lifetime of this
@@ skipping 48 matching lines @@
 #pragma once
 
 #include <map>
 
 #include "base/gtest_prod_util.h"
 #include "base/lock.h"
 #include "base/process.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "base/shared_memory.h"
-#include "base/waitable_event.h"
 #include "chrome/browser/chrome_thread.h"
 #include "ipc/ipc_message.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_output_controller.h"
 #include "media/audio/simple_sources.h"
 
 class AudioManager;
 struct ViewHostMsg_Audio_CreateStream_Params;
 
 class AudioRendererHost : public base::RefCountedThreadSafe<
@@ skipping 160 matching lines @@
   base::ProcessHandle process_handle_;
   IPC::Message::Sender* ipc_sender_;
 
   // A map of id to audio sources.
   AudioEntryMap audio_entries_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_AUDIO_RENDERER_HOST_H_