Remove the AudioManager singleton.

content/browser/renderer_host/media/audio_input_renderer_host.cc

 // Copyright (c) 2011 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/browser/renderer_host/media/audio_input_renderer_host.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/process.h"
 #include "base/shared_memory.h"
@@ skipping 228 matching lines @@
   // Then try to initialize the sync writer.
   if (!writer->Init()) {
     SendErrorMessage(stream_id);
     return;
   }
 
   // If we have successfully created the SyncWriter then assign it to the
   // entry and construct an AudioInputController.
   entry->writer.reset(writer.release());
   entry->controller = media::AudioInputController::CreateLowLatency(
+      resource_context_->audio_manager(),
       this,
       audio_params,
       device_id,
       entry->writer.get());
 
   if (!entry->controller) {
     SendErrorMessage(stream_id);
     return;
   }
 
@@ skipping 184 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   for (SessionEntryMap::iterator it = session_entries_.begin();
        it != session_entries_.end(); ++it) {
     if (stream_id == it->second) {
       return it->first;
     }
   }
   return 0;
 }