Modify ResourceMessageFilter so that it can support attaching to PluginProcessHost.

content/browser/renderer_host/socket_stream_dispatcher_host.h

Index: content/browser/renderer_host/socket_stream_dispatcher_host.h
===================================================================
--- content/browser/renderer_host/socket_stream_dispatcher_host.h	(revision 222038)
+++ content/browser/renderer_host/socket_stream_dispatcher_host.h	(working copy)
@@ -7,9 +7,9 @@
 
 #include <vector>
 
+#include "base/callback_forward.h"
 #include "base/id_map.h"
 #include "base/memory/weak_ptr.h"
-#include "content/browser/loader/resource_message_filter.h"
 #include "content/browser/ssl/ssl_error_handler.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "net/socket_stream/socket_stream.h"
@@ -32,9 +32,11 @@
       public net::SocketStream::Delegate,
       public SSLErrorHandler::Delegate {
  public:
+  typedef base::Callback<net::URLRequestContext*(ResourceType::Type)>
+      GetRequestContextCallback;
   SocketStreamDispatcherHost(
       int render_process_id,
-      ResourceMessageFilter::URLRequestContextSelector* selector,
+      const GetRequestContextCallback& request_context_callback,
       ResourceContext* resource_context);
 
   // BrowserMessageFilter:
@@ -84,8 +86,7 @@
 
   IDMap<SocketStreamHost> hosts_;
   int render_process_id_;
-  const scoped_ptr<ResourceMessageFilter::URLRequestContextSelector>
-      url_request_context_selector_;
+  GetRequestContextCallback request_context_callback_;
   ResourceContext* resource_context_;
 
   base::WeakPtrFactory<SocketStreamDispatcherHost> weak_ptr_factory_;