Fourth patch in getting rid of caching MessageLoop pointers.

chrome/browser/renderer_host/resource_dispatcher_host.h

 // Copyright (c) 2009 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.
 
 // This is the browser side of the resource dispatcher, it receives requests
 // from the child process (i.e. [Renderer, Plugin, Worker]ProcessHost), and
 // dispatches them to URLRequests. It then fowards the messages from the
 // URLRequests back to the correct process for handling.
 //
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
@@ skipping 87 matching lines @@
     int child_id;
     int request_id;
 
     bool operator<(const GlobalRequestID& other) const {
       if (child_id == other.child_id)
         return request_id < other.request_id;
       return child_id < other.child_id;
     }
   };
 
+  // TODO(jam): take the parameter out once 25354 is done.
   explicit ResourceDispatcherHost(MessageLoop* io_loop);
   ~ResourceDispatcherHost();
 
   void Initialize();
 
   // Puts the resource dispatcher host in an inactive state (unable to begin
   // new requests).  Cancels all pending requests.
   void Shutdown();
 
   // Returns true if the message was a resource message that was processed.
@@ skipping 362 matching lines @@
 
   // Keeps track of elements blocked by the Privacy Blacklist.
   chrome::BlockedResponse blocked_;
 
   static bool g_is_http_prioritization_enabled;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHost);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_H_