Part 1: Plumb render view ID to render host

content/renderer/pepper/pepper_plugin_delegate_impl.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/pepper/pepper_plugin_delegate_impl.h"
 
 #include <cmath>
 #include <cstddef>
 #include <map>
 #include <queue>
@@ skipping 747 matching lines @@
 uint32_t PepperPluginDelegateImpl::GetAudioHardwareOutputBufferSize() {
   return static_cast<uint32_t>(audio_hardware::GetOutputBufferSize());
 }
 
 webkit::ppapi::PluginDelegate::PlatformAudioOutput*
 PepperPluginDelegateImpl::CreateAudioOutput(
     uint32_t sample_rate,
     uint32_t sample_count,
     webkit::ppapi::PluginDelegate::PlatformAudioOutputClient* client) {
   return PepperPlatformAudioOutputImpl::Create(
+      render_view_->GetRoutingID(),
       static_cast<int>(sample_rate), static_cast<int>(sample_count), client);
 }
 
 webkit::ppapi::PluginDelegate::PlatformAudioInput*
 PepperPluginDelegateImpl::CreateAudioInput(
     const std::string& device_id,
     uint32_t sample_rate,
     uint32_t sample_count,
     webkit::ppapi::PluginDelegate::PlatformAudioInputClient* client) {
   return PepperPlatformAudioInputImpl::Create(
@@ skipping 972 matching lines @@
   else
     return render_view_->mouse_lock_dispatcher();
 }
 
 webkit_glue::ClipboardClient*
     PepperPluginDelegateImpl::CreateClipboardClient() const {
   return new RendererClipboardClient;
 }
 
 }  // namespace content