Fix a bug where redirect chain gets lost on process swap.

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc

 // Copyright (c) 2011 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/renderer_host/chrome_resource_dispatcher_host_delegate.h"
 
 #include "base/logging.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/download/download_request_limiter.h"
 #include "chrome/browser/download/download_throttling_resource_handler.h"
 #include "chrome/browser/download/download_util.h"
 #include "chrome/browser/external_protocol/external_protocol_handler.h"
 #include "chrome/browser/instant/instant_loader.h"
 #include "chrome/browser/net/load_timing_observer.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/prerender/prerender_tracker.h"
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "chrome/browser/renderer_host/chrome_url_request_user_data.h"
 #include "chrome/browser/renderer_host/safe_browsing_resource_handler.h"
+#include "chrome/browser/renderer_host/transfer_navigation_resource_handler.h"
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
 #include "chrome/browser/ui/auto_login_prompter.h"
 #include "chrome/browser/ui/login/login_prompt.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/user_script.h"
 #include "chrome/common/render_messages.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/resource_dispatcher_host.h"
 #include "content/browser/renderer_host/resource_dispatcher_host_request_info.h"
 #include "content/browser/renderer_host/resource_message_filter.h"
@@ skipping 112 matching lines @@
 
   return true;
 }
 
 ResourceHandler* ChromeResourceDispatcherHostDelegate::RequestBeginning(
     ResourceHandler* handler,
     net::URLRequest* request,
     const content::ResourceContext& resource_context,
     bool is_subresource,
     int child_id,
-    int route_id) {
+    int route_id,
+    bool is_continuation_of_transferred_request) {
+  if (is_continuation_of_transferred_request)
+    ChromeURLRequestUserData::Delete(request);
+
   ChromeURLRequestUserData* user_data =
       ChromeURLRequestUserData::Create(request);
   if (prerender_tracker_->IsPrerenderingOnIOThread(child_id, route_id)) {
     user_data->set_is_prerender(true);
     request->set_priority(net::IDLE);
   }
 
 #if defined(ENABLE_SAFE_BROWSING)
   // Insert safe browsing at the front of the chain, so it gets to decide
   // on policies first.
   ProfileIOData* io_data = reinterpret_cast<ProfileIOData*>(
       resource_context.GetUserData(NULL));
   if (io_data->safe_browsing_enabled()->GetValue()) {
     handler = CreateSafeBrowsingResourceHandler(
         handler, child_id, route_id, is_subresource);
   }
 #endif
 
 #if defined(OS_CHROMEOS)
   // We check offline first, then check safe browsing so that we still can block
   // unsafe site after we remove offline page.
   handler = new OfflineResourceHandler(
       handler, child_id, route_id, resource_dispatcher_host_, request,
       resource_context.appcache_service());
 #endif
+
+  // TODO(mpcomplete): Leaving disabled for now, since I'm checking this in
+  // close to the branch point.
+#if defined(TRANSFER_REDIRECTS_BUG79520)
+  handler = new TransferNavigationResourceHandler(
+      handler, resource_dispatcher_host_, request);
+#endif
+
   return handler;
 }
 
 ResourceHandler* ChromeResourceDispatcherHostDelegate::DownloadStarting(
       ResourceHandler* handler,
       const content::ResourceContext& resource_context,
       net::URLRequest* request,
       int child_id,
       int route_id,
       int request_id,
@@ skipping 145 matching lines @@
   AutoLoginPrompter::ShowInfoBarIfPossible(request, info->child_id(),
                                            info->route_id());
 }
 
 void ChromeResourceDispatcherHostDelegate::OnRequestRedirected(
     net::URLRequest* request,
     content::ResourceResponse* response,
     ResourceMessageFilter* filter) {
   LoadTimingObserver::PopulateTimingInfo(request, response);
 }