Adding DRP specfic UMA for FirstContentfulPaint

content/browser/loader/resource_dispatcher_host_impl.h

 // Copyright (c) 2012 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 forwards 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 354 matching lines @@
   // An init helper that runs on the IO thread.
   void OnInit();
 
   // A shutdown helper that runs on the IO thread.
   void OnShutdown();
 
   void OnRenderFrameDeleted(const GlobalFrameRoutingId& global_routing_id);
 
   // Helper function for regular and download requests.
   void BeginRequestInternal(scoped_ptr<net::URLRequest> request,
-                            scoped_ptr<ResourceHandler> handler);
+                            scoped_ptr<ResourceHandler> handler,
+                            ResourceContext* resource_context);
 
   void StartLoading(ResourceRequestInfoImpl* info,
                     scoped_ptr<ResourceLoader> loader);
 
   // We keep track of how much memory each request needs and how many requests
   // are issued by each renderer. These are known as OustandingRequestStats.
   // Memory limits apply to all requests sent to us by the renderers. There is a
   // limit for each renderer. File descriptor limits apply to requests that are
   // receiving their body. These are known as in-flight requests. There is a
   // global limit that applies for the browser process. Each render is allowed
@@ skipping 262 matching lines @@
   DelegateMap delegate_map_;
 
   scoped_ptr<ResourceScheduler> scheduler_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_RESOURCE_DISPATCHER_HOST_IMPL_H_