Seculative resource prefetching for URLs CL.

chrome/browser/profiles/profile_impl_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_impl_io_data.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/threading/worker_pool.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/net/chrome_net_log.h"
 #include "chrome/browser/net/chrome_network_delegate.h"
 #include "chrome/browser/net/connect_interceptor.h"
 #include "chrome/browser/net/http_server_properties_manager.h"
 #include "chrome/browser/net/predictor.h"
+#include "chrome/browser/net/resource_prefetch_interceptor.h"
 #include "chrome/browser/net/sqlite_persistent_cookie_store.h"
 #include "chrome/browser/net/sqlite_server_bound_cert_store.h"
+#include "chrome/browser/predictors/resource_prefetch_predictor.h"
+#include "chrome/browser/predictors/resource_prefetch_predictor_factory.h"
 #include "chrome/browser/prefs/pref_member.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/resource_context.h"
 #include "net/base/server_bound_cert_service.h"
 #include "net/ftp/ftp_network_layer.h"
@@ skipping 66 matching lines @@
   lazy_params->media_cache_max_size = media_cache_max_size;
   lazy_params->extensions_cookie_path = extensions_cookie_path;
   lazy_params->restore_old_session_cookies = restore_old_session_cookies;
 
   io_data_->lazy_params_.reset(lazy_params);
 
   // Keep track of isolated app path separately so we can use it on demand.
   io_data_->app_path_ = app_path;
 
   io_data_->predictor_.reset(predictor);
+  io_data_->resource_prefetch_predictor_ =
+      predictors::ResourcePrefetchPredictorFactory::GetForProfile(profile_);
 
   if (!main_request_context_getter_) {
     main_request_context_getter_ =
         ChromeURLRequestContextGetter::CreateOriginal(
             profile_, io_data_);
   }
   io_data_->predictor_->InitNetworkPredictor(profile_->GetPrefs(),
                                              local_state,
                                              io_thread,
                                              main_request_context_getter_);
@@ skipping 322 matching lines @@
   main_context->set_chrome_url_data_manager_backend(
       chrome_url_data_manager_backend());
 
   main_context->set_job_factory(job_factory());
   media_request_context_->set_job_factory(job_factory());
   extensions_context->set_job_factory(job_factory());
 
   job_factory()->AddInterceptor(
       new chrome_browser_net::ConnectInterceptor(predictor_.get()));
 
+  if (resource_prefetch_predictor_)
+    job_factory()->AddInterceptor(
+        new chrome_browser_net::ResourcePrefetchInterceptor(
+            resource_prefetch_predictor_));
+
   lazy_params_.reset();
 }
 
 ChromeURLRequestContext*
 ProfileImplIOData::InitializeAppRequestContext(
     ChromeURLRequestContext* main_context,
     const std::string& app_id) const {
   AppRequestContext* context = new AppRequestContext;
 
   // Copy most state from the main context.
@@ skipping 72 matching lines @@
 void ProfileImplIOData::ClearNetworkingHistorySinceOnIOThread(
     base::Time time) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   LazyInitialize();
 
   DCHECK(transport_security_state());
   transport_security_state()->DeleteSince(time);
   DCHECK(http_server_properties_manager());
   http_server_properties_manager()->Clear();
 }