Use lossy prefs in the net predictor, and update them more frequently

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 <memory>
 #include <set>
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/metrics/field_trial.h"
 #include "base/sequenced_task_runner.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/worker_pool.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/net/chrome_network_delegate.h"
 #include "chrome/browser/net/http_server_properties_manager_factory.h"
 #include "chrome/browser/net/predictor.h"
 #include "chrome/browser/net/quota_policy_channel_id_store.h"
 #include "chrome/browser/net/sdch_owner_pref_storage.h"
 #include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_io_data.h"
 #include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h"
@@ skipping 76 matching lines @@
       initialized_(false) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(profile);
 }
 
 ProfileImplIOData::Handle::~Handle() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (io_data_->predictor_ != NULL) {
     // io_data_->predictor_ might be NULL if Init() was never called
     // (i.e. we shut down before ProfileImpl::DoFinalInit() got called).
-    bool save_prefs = true;
-#if defined(OS_CHROMEOS)
-    save_prefs = !chromeos::ProfileHelper::IsSigninProfile(profile_);
-#endif
-    if (save_prefs)
-      io_data_->predictor_->SaveStateForNextStartup();
     io_data_->predictor_->ShutdownOnUIThread();
   }
 
   if (io_data_->http_server_properties_manager_)
     io_data_->http_server_properties_manager_->ShutdownOnPrefThread();
 
   // io_data_->data_reduction_proxy_io_data() might be NULL if Init() was
   // never called.
   if (io_data_->data_reduction_proxy_io_data())
     io_data_->data_reduction_proxy_io_data()->ShutdownOnUIThread();
@@ skipping 654 matching lines @@
     const base::Closure& completion) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK(initialized());
 
   DCHECK(transport_security_state());
   // Completes synchronously.
   transport_security_state()->DeleteAllDynamicDataSince(time);
   DCHECK(http_server_properties_manager_);
   http_server_properties_manager_->Clear(completion);
 }