text: // 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/ui/webui/options/chromeos/stats_options_handler.h"
  
  #include "base/bind.h"
  #include "base/bind_helpers.h"
  #include "base/metrics/user_metrics.h"
  #include "base/strings/utf_string_conversions.h"
  #include "base/values.h"
  #include "content/public/browser/web_ui.h"
  
  using base::UserMetricsAction;
  
  namespace chromeos {
  namespace options {
  
  StatsOptionsHandler::StatsOptionsHandler() {
  }
  
  // OptionsPageUIHandler implementation.
  void StatsOptionsHandler::GetLocalizedValues(
      base::DictionaryValue* localized_strings) {
  }
  
  // WebUIMessageHandler implementation.
  void StatsOptionsHandler::RegisterMessages() {
    web_ui()->RegisterMessageCallback("metricsReportingCheckboxAction",
        base::Bind(&StatsOptionsHandler::HandleMetricsReportingCheckbox,
                   base::Unretained(this)));
  }
  
  void StatsOptionsHandler::HandleMetricsReportingCheckbox(
      const base::ListValue* args) {
  #if defined(GOOGLE_CHROME_BUILD)
    const std::string checked_str = base::UTF16ToUTF8(ExtractStringValue(args));
    const bool enabled = (checked_str == "true");
    base::RecordAction(
        enabled ? UserMetricsAction("Options_MetricsReportingCheckbox_Enable")
                : UserMetricsAction("Options_MetricsReportingCheckbox_Disable"));
  #endif
  }
  
  }  // namespace options
  }  // namespace chromeos
  