Intiialize AudioManager and related class lazily

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index b1085f4db112e5a683f64a0fab25f6d6c1c1e54c..ca16f5db42017a542659dc367a0c939339ad944e 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -832,7 +832,7 @@ void RenderProcessHostImpl::CreateMessageFilters() {
   AddFilter(new ResourceSchedulerFilter(GetID()));
   MediaInternals* media_internals = MediaInternals::GetInstance();
   media::AudioManager* audio_manager =
-      BrowserMainLoop::GetInstance()->audio_manager();
+      BrowserMainLoop::GetInstance()->GetAudioManager();
   // Add BrowserPluginMessageFilter to ensure it gets the first stab at messages
   // from guests.
   scoped_refptr<BrowserPluginMessageFilter> bp_message_filter(
@@ -883,7 +883,8 @@ void RenderProcessHostImpl::CreateMessageFilters() {
 
   AddFilter(resource_message_filter);
   MediaStreamManager* media_stream_manager =
-      BrowserMainLoop::GetInstance()->media_stream_manager();
+      BrowserMainLoop::GetInstance()->GetMediaStreamManager();
+  BrowserMainLoop::GetInstance()->InitializeSpeechRecognitionManager();
   // The AudioInputRendererHost and AudioRendererHost needs to be available for
   // lookup, so it's stashed in a member variable.
   audio_input_renderer_host_ = new AudioInputRendererHost(
@@ -2019,7 +2020,7 @@ void RenderProcessHostImpl::DisableEventLogRecordings() {
 void RenderProcessHostImpl::SetWebRtcLogMessageCallback(
     base::Callback<void(const std::string&)> callback) {
 #if defined(ENABLE_WEBRTC)
-  BrowserMainLoop::GetInstance()->media_stream_manager()->
+  BrowserMainLoop::GetInstance()->GetMediaStreamManager()->
       RegisterNativeLogCallback(GetID(), callback);
 #endif
 }
@@ -2027,7 +2028,7 @@ void RenderProcessHostImpl::SetWebRtcLogMessageCallback(
 void RenderProcessHostImpl::ClearWebRtcLogMessageCallback() {
 #if defined(ENABLE_WEBRTC)
   BrowserMainLoop::GetInstance()
-      ->media_stream_manager()
+      ->GetMediaStreamManager()
       ->UnregisterNativeLogCallback(GetID());
 #endif
 }