[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 49 matching lines @@
   prerender::PrerenderContents* prerender_contents =
       prerender::PrerenderContents::FromWebContents(web_contents);
 
   if (prerender_contents)
     prerender_contents->AddNetworkBytes(bytes);
 
   prerender::PrerenderManager* prerender_manager =
       GetPrerenderManager(web_contents);
   if (prerender_manager)
     prerender_manager->AddProfileNetworkBytesIfEnabled(bytes);
+
+#if defined(OS_ANDROID)
+  offline_pages::BackgroundLoaderOffliner* background_loader =
+      offline_pages::BackgroundLoaderOffliner::FromWebContents(web_contents);
+
+  if (background_loader)
+    background_loader->OnNetworkBytesChanged(bytes);
+#endif  // OS_ANDROID

[mmenke, 2017/03/15 16:27:26]

Can we put this in NotifyUIThreadOfRequestComplete instead?  I don't think this
file needs to know of the association between offline_pages and prerender.

[chili, 2017/03/15 18:02:09]

I moved this section to NotifyUIThreadOfRequestComplete. However, that method is
still in this file...?

 }
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
 void SendExecuteMimeTypeHandlerEvent(
     std::unique_ptr<content::StreamInfo> stream,
     int64_t expected_content_size,
     const std::string& extension_id,
     const std::string& view_id,
     bool embedded,
     int frame_tree_node_id,
@@ skipping 736 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);
 }