[New Tab Page] Change the mechanism to intercept online NTP errors

chrome/browser/profiles/profile_io_data.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/profiles/profile_io_data.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 30 matching lines @@
 #include "chrome/browser/net/chrome_network_delegate.h"
 #include "chrome/browser/net/chrome_url_request_context_getter.h"
 #include "chrome/browser/net/cookie_store_util.h"
 #include "chrome/browser/net/proxy_service_factory.h"
 #include "chrome/browser/net/resource_prefetch_predictor_observer.h"
 #include "chrome/browser/predictors/resource_prefetch_predictor.h"
 #include "chrome/browser/predictors/resource_prefetch_predictor_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/signin/signin_names_io_thread.h"
+#include "chrome/browser/ui/search/new_tab_page_interceptor_service.h"
+#include "chrome/browser/ui/search/new_tab_page_interceptor_service_factory.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "components/content_settings/core/browser/content_settings_provider.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h"
 #include "components/dom_distiller/core/url_constants.h"
 #include "components/startup_metric_utils/startup_metric_utils.h"
 #include "components/sync_driver/pref_names.h"
@@ skipping 330 matching lines @@
   ProtocolHandlerRegistry* protocol_handler_registry =
       ProtocolHandlerRegistryFactory::GetForBrowserContext(profile);
   DCHECK(protocol_handler_registry);
 
   // The profile instance is only available here in the InitializeOnUIThread
   // method, so we create the url job factory here, then save it for
   // later delivery to the job factory in Init().
   params->protocol_handler_interceptor =
       protocol_handler_registry->CreateJobInterceptorFactory();
 
+  NewTabPageInterceptorService* new_tab_interceptor_service =
+      NewTabPageInterceptorServiceFactory::GetForProfile(profile);
+  if (new_tab_interceptor_service) {
+    params->new_tab_page_interceptor =
+        new_tab_interceptor_service->CreateInterceptor();
+  }
+
   params->proxy_config_service
       .reset(ProxyServiceFactory::CreateProxyConfigService(
            profile->GetProxyConfigTracker()));
 #if defined(ENABLE_SUPERVISED_USERS)
   SupervisedUserService* supervised_user_service =
       SupervisedUserServiceFactory::GetForProfile(profile);
   params->supervised_user_url_filter =
       supervised_user_service->GetURLFilterForIOThread();
 #endif
 #if defined(OS_CHROMEOS)
@@ skipping 711 matching lines @@
   main_request_context_->set_cert_verifier(cert_verifier_.get());
 #else
   main_request_context_->set_cert_verifier(
       io_thread_globals->cert_verifier.get());
 #endif
 
   // TODO(vadimt): Remove ScopedTracker below once crbug.com/436671 is fixed.
   tracked_objects::ScopedTracker tracking_profile5(
       FROM_HERE_WITH_EXPLICIT_FUNCTION("436671 ProfileIOData::Init5"));
 
+  // Install the New Tab Page Interceptor.
+  if (profile_params_->new_tab_page_interceptor.get()) {
+    request_interceptors.push_back(
+        profile_params_->new_tab_page_interceptor.release());
+  }
+
   InitializeInternal(
       network_delegate.Pass(), profile_params_.get(),
       protocol_handlers, request_interceptors.Pass());
 
   profile_params_.reset();
   initialized_ = true;
 }
 
 void ProfileIOData::ApplyProfileParamsToContext(
     net::URLRequestContext* context) const {
@@ skipping 189 matching lines @@
 void ProfileIOData::SetCookieSettingsForTesting(
     CookieSettings* cookie_settings) {
   DCHECK(!cookie_settings_.get());
   cookie_settings_ = cookie_settings;
 }
 
 void ProfileIOData::set_signin_names_for_testing(
     SigninNamesOnIOThread* signin_names) {
   signin_names_.reset(signin_names);
 }