Use no-op statistics collecting object for WebView

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/logging.h"
 #include "base/metrics/field_trial.h"
@@ skipping 79 matching lines @@
 ProfileImplIOData::Handle::Handle(Profile* profile)
     : io_data_(new ProfileImplIOData),
       profile_(profile),
       initialized_(false) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(profile);
 }
 
 ProfileImplIOData::Handle::~Handle() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  io_data_->data_reduction_proxy_statistics_prefs()->WritePrefs();
+  io_data_->data_reduction_proxy_statistics_prefs()->WriteStats();
 
   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_->SaveStateForNextStartupAndTrim();
@@ skipping 722 matching lines @@
   transport_security_state()->DeleteAllDynamicDataSince(time);
   DCHECK(http_server_properties_manager_);
   http_server_properties_manager_->Clear(completion);
 }
 
 bool ProfileImplIOData::IsDataReductionProxyEnabled() const {
   return data_reduction_proxy_enabled_.GetValue() ||
          CommandLine::ForCurrentProcess()->HasSwitch(
             data_reduction_proxy::switches::kEnableDataReductionProxy);
 }