[Offline Pages] Allow BackgroundLoader to track network bytes using prerenderer hook-in.

chrome/browser/loader/chrome_resource_dispatcher_host_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/loader/chrome_resource_dispatcher_host_delegate.h"
 
 #include <stdint.h>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 89 matching lines @@
 #endif
 
 #if defined(USE_SYSTEM_PROTOBUF)
 #include <google/protobuf/repeated_field.h>
 #else
 #include "third_party/protobuf/src/google/protobuf/repeated_field.h"
 #endif
 
 #if defined(OS_ANDROID)
 #include "chrome/browser/android/download/intercept_download_resource_throttle.h"
+#include "chrome/browser/android/offline_pages/background_loader_offliner.h"
 #include "chrome/browser/android/offline_pages/downloads/resource_throttle.h"
 #include "chrome/browser/loader/data_reduction_proxy_resource_throttle_android.h"
 #include "components/navigation_interception/intercept_navigation_delegate.h"
 #endif
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/login/signin/merge_session_resource_throttle.h"
 #include "chrome/browser/chromeos/login/signin/merge_session_throttling_utils.h"
 #endif
 
@@ skipping 245 matching lines @@
     base::TimeTicks request_creation_time,
     base::TimeDelta request_loading_time) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   content::WebContents* web_contents = web_contents_getter.Run();
   if (!web_contents)
     return;
   if (resource_type == content::RESOURCE_TYPE_MAIN_FRAME) {
     LogMainFrameMetricsOnUIThread(url, net_error, request_loading_time,
                                   web_contents);
   }
-  if (!was_cached)
+  if (!was_cached) {
     UpdatePrerenderNetworkBytesCallback(web_contents, total_received_bytes);
+#if defined(OS_ANDROID)
+    offline_pages::BackgroundLoaderOffliner* background_loader =
+        offline_pages::BackgroundLoaderOffliner::FromWebContents(web_contents);
+
+    if (background_loader)
+      background_loader->OnNetworkBytesChanged(total_received_bytes);
+#endif  // OS_ANDROID
+  }
   page_load_metrics::MetricsWebContentsObserver* metrics_observer =
       page_load_metrics::MetricsWebContentsObserver::FromWebContents(
           web_contents);
   if (metrics_observer) {
     metrics_observer->OnRequestComplete(
         request_id, resource_type, was_cached, used_data_reduction_proxy,
         raw_body_bytes, original_content_length, request_creation_time);
   }
 }
 
@@ skipping 538 matching lines @@
           base::Bind(&ChromeResourceDispatcherHostDelegate::OnAbortedFrameLoad,
                     base::Unretained(this), url, request_loading_time));
       return;
   }
 
   std::string metric_name = (request_loading_time.InMilliseconds() < 100 ?
       "Net.ErrAborted.Fast" : "Net.ErrAborted.Slow");
   rappor::SampleDomainAndRegistryFromGURL(
       g_browser_process->rappor_service(), metric_name, url);
 }