Remove GetAudioManager and GetMediaStreamManager from ResourceContext. The reason is the content mo…

content/shell/shell_resource_context.cc

Index: content/shell/shell_resource_context.cc
===================================================================
--- content/shell/shell_resource_context.cc	(revision 123165)
+++ content/shell/shell_resource_context.cc	(working copy)
@@ -27,13 +27,4 @@
   return NULL;
 }
 
-media_stream::MediaStreamManager*
-    ShellResourceContext::GetMediaStreamManager() {
-  return NULL;
-}
-
-AudioManager* ShellResourceContext::GetAudioManager() {
-  return NULL;
-}
-
 }  // namespace content