Revert CL 117933003. Re-add resource speculative prefetching code.

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 24 matching lines @@
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/media/media_device_id_salt.h"
 #include "chrome/browser/net/about_protocol_handler.h"
 #include "chrome/browser/net/chrome_fraudulent_certificate_reporter.h"
 #include "chrome/browser/net/chrome_http_user_agent_settings.h"
 #include "chrome/browser/net/chrome_net_log.h"
 #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/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.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 295 matching lines @@
   params->cookie_settings = CookieSettings::Factory::GetForProfile(profile);
   params->host_content_settings_map = profile->GetHostContentSettingsMap();
   params->ssl_config_service = profile->GetSSLConfigService();
   params->cookie_monster_delegate =
       chrome_browser_net::CreateCookieDelegate(profile);
 #if defined(ENABLE_EXTENSIONS)
   params->extension_info_map =
       extensions::ExtensionSystem::Get(profile)->info_map();
 #endif
 
+  if (predictors::ResourcePrefetchPredictor* predictor =
+          predictors::ResourcePrefetchPredictorFactory::GetForProfile(
+              profile)) {
+    resource_prefetch_predictor_observer_.reset(
+        new chrome_browser_net::ResourcePrefetchPredictorObserver(predictor));
+  }
+
   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();
 
@@ skipping 699 matching lines @@
   // Take ownership over these parameters.
   cookie_settings_ = profile_params_->cookie_settings;
   host_content_settings_map_ = profile_params_->host_content_settings_map;
 #if defined(ENABLE_EXTENSIONS)
   extension_info_map_ = profile_params_->extension_info_map;
 #endif
 
   resource_context_->host_resolver_ = io_thread_globals->host_resolver.get();
   resource_context_->request_context_ = main_request_context_.get();
 
+  if (profile_params_->resource_prefetch_predictor_observer_) {
+    resource_prefetch_predictor_observer_.reset(
+        profile_params_->resource_prefetch_predictor_observer_.release());
+  }
+
 #if defined(ENABLE_MANAGED_USERS)
   supervised_user_url_filter_ = profile_params_->supervised_user_url_filter;
 #endif
 
 #if defined(OS_CHROMEOS)
   username_hash_ = profile_params_->username_hash;
   use_system_key_slot_ = profile_params_->use_system_key_slot;
   if (use_system_key_slot_)
     EnableNSSSystemKeySlotForResourceContext(resource_context_.get());
 
@@ skipping 211 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);
 }