Speculative resource prefetching - fixing missing navigations due to server side redirects.

chrome/browser/renderer_host/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/renderer_host/chrome_resource_dispatcher_host_delegate.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/logging.h"
@@ skipping 134 matching lines @@
   AppendChromeMetricsHeaders(request, resource_context, resource_type);
 
   AppendStandardResourceThrottles(request,
                                   resource_context,
                                   child_id,
                                   route_id,
                                   resource_type,
                                   throttles);
 
   ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
-  if (io_data->resource_prefetch_predictor_observer())
+  if (io_data->resource_prefetch_predictor_observer()) {
     io_data->resource_prefetch_predictor_observer()->OnRequestStarted(
         request, resource_type, child_id, route_id);
+  }
 }
 
 void ChromeResourceDispatcherHostDelegate::DownloadStarting(
     net::URLRequest* request,
     content::ResourceContext* resource_context,
     int child_id,
     int route_id,
     int request_id,
     bool is_content_initiated,
     ScopedVector<content::ResourceThrottle>* throttles) {
@@ skipping 185 matching lines @@
   // suggest auto-login, if available.
   AutoLoginPrompter::ShowInfoBarIfPossible(request, info->GetChildID(),
                                            info->GetRouteID());
 
   ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
   if (io_data->resource_prefetch_predictor_observer())
     io_data->resource_prefetch_predictor_observer()->OnResponseStarted(request);
 }
 
 void ChromeResourceDispatcherHostDelegate::OnRequestRedirected(
+    const GURL& redirect_url,
     net::URLRequest* request,
     content::ResourceContext* resource_context,
     content::ResourceResponse* response) {
   LoadTimingObserver::PopulateTimingInfo(request, response);
 
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
   const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request);
 
   // See if the response contains the Google-Accounts-SignIn header.  If so,
   // then the user has just finished signing in, and the server is allowing the
   // browser to suggest connecting the user's profile to the account.
   OneClickSigninHelper::ShowInfoBarIfPossible(request, info->GetChildID(),
                                               info->GetRouteID());
 #endif
 
   ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
-  if (io_data->resource_prefetch_predictor_observer())
+  if (io_data->resource_prefetch_predictor_observer()) {
     io_data->resource_prefetch_predictor_observer()->OnRequestRedirected(
-        request);
+        redirect_url, request);
+  }
 }
 
 void ChromeResourceDispatcherHostDelegate::OnFieldTrialGroupFinalized(
     const std::string& trial_name,
     const std::string& group_name) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   chrome_variations::VariationID new_id =
       experiments_helper::GetGoogleVariationID(trial_name, group_name);
   if (new_id == chrome_variations::kEmptyID)
     return;
@@ skipping 41 matching lines @@
   if (base::Base64Encode(serialized, &hashed)) {
     // If successful, swap the header value with the new one.
     // Note that the list of IDs and the header could be temporarily out of sync
     // if IDs are added as we are recreating the header, but we're OK with those
     // descrepancies.
     variation_ids_header_ = hashed;
   } else {
     DVLOG(1) << "Failed to base64 encode Variation IDs value: " << serialized;
   }
 }