Add histograms for network activity, and total/cumulative

chrome/browser/net/chrome_network_delegate.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 "chrome/browser/net/chrome_network_delegate.h"
 
 #include "base/logging.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
@@ skipping 375 matching lines @@
     socket->net_log()->AddEvent(
         net::NetLog::TYPE_CHROME_POLICY_ABORTED_REQUEST,
         net::NetLog::StringCallback("url",
                                     &socket->url().possibly_invalid_spec()));
     return net::ERR_NETWORK_ACCESS_DENIED;
   }
 #endif
   return net::OK;
 }
 
-void ChromeNetworkDelegate::OnCacheWaitStateChange(
+void ChromeNetworkDelegate::OnRequestWaitStateChange(
     const net::URLRequest& request,
-    CacheWaitState state) {
+    RequestWaitState state) {
   if (cache_stats_)
-    cache_stats_->OnCacheWaitStateChange(request, state);
+    cache_stats_->OnRequestWaitStateChange(request, state);
 }