Move the MediaObserver getter from ResourceContext to ContentBrowserClient, since we only need to s…

chrome/browser/io_thread.h

Index: chrome/browser/io_thread.h
===================================================================
--- chrome/browser/io_thread.h	(revision 128803)
+++ chrome/browser/io_thread.h	(working copy)
@@ -21,7 +21,6 @@
 
 class ChromeNetLog;
 class ExtensionEventRouterForwarder;
-class MediaInternals;
 class PrefProxyConfigTrackerImpl;
 class PrefService;
 class SystemURLRequestContextGetter;
@@ -58,13 +57,6 @@
     Globals();
     ~Globals();
 
-    struct MediaGlobals {
-      MediaGlobals();
-      ~MediaGlobals();
-      // MediaInternals singleton used to aggregate media information.
-      scoped_ptr<MediaInternals> media_internals;
-    } media;
-
     // The "system" NetworkDelegate, used for Profile-agnostic network events.
     scoped_ptr<net::NetworkDelegate> system_network_delegate;
     scoped_ptr<net::HostResolver> host_resolver;