Move a bunch of code in content\renderer to the content namespace.

content/renderer/media/audio_hardware.cc

 // 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.
 
 #include "content/renderer/media/audio_hardware.h"
 
 #include "base/logging.h"
 #include "content/common/view_messages.h"
 #include "content/renderer/render_thread_impl.h"
 
+using content::RenderThreadImpl;
 using media::ChannelLayout;
 using media::CHANNEL_LAYOUT_NONE;
 
 static int output_sample_rate = 0;
 static int input_sample_rate = 0;
 static size_t output_buffer_size = 0;
 static ChannelLayout input_channel_layout = CHANNEL_LAYOUT_NONE;
 
 namespace audio_hardware {
 
@@ skipping 46 matching lines @@
 void ResetCache() {
   DCHECK(RenderThreadImpl::current() != NULL);
 
   output_sample_rate = 0.0;
   input_sample_rate = 0.0;
   output_buffer_size = 0;
   input_channel_layout = CHANNEL_LAYOUT_NONE;
 }
 
 }  // namespace audio_hardware