Adding histograms showing fraction of page load times

net/url_request/url_request_context_builder.cc

 // 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.
 
 #include "net/url_request/url_request_context_builder.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 93 matching lines @@
   virtual bool OnCanThrottleRequest(const URLRequest& request) const OVERRIDE {
     return false;
   }
 
   virtual int OnBeforeSocketStreamConnect(
       SocketStream* stream,
       const CompletionCallback& callback) OVERRIDE {
     return OK;
   }
 
+  virtual void OnCacheWaitStateChange(const URLRequest& request,
+                                      CacheWaitState state) OVERRIDE {
+  }
+
   DISALLOW_COPY_AND_ASSIGN(BasicNetworkDelegate);
 };
 
 class BasicURLRequestContext : public URLRequestContext {
  public:
   BasicURLRequestContext()
       : cache_thread_("Cache Thread"),
         file_thread_("File Thread"),
         ALLOW_THIS_IN_INITIALIZER_LIST(storage_(this)) {}
 
@@ skipping 157 matching lines @@
     http_transaction_factory = new HttpNetworkLayer(network_session);
   }
   storage->set_http_transaction_factory(http_transaction_factory);
 
   // TODO(willchan): Support sdch.
 
   return context;
 }
 
 }  // namespace net