Consolidates accessing and setting the UMA pref to be within metrics code

chrome/browser/ui/webui/options/core_options_handler.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/ui/webui/options/core_options_handler.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
+#include "base/callback.h"
 #include "base/json/json_reader.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_util.h"
-#include "chrome/browser/metrics/metrics_reporting_state.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "chrome/grit/locale_settings.h"
 #include "components/url_fixer/url_fixer.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_ui.h"
 #include "extensions/browser/extension_pref_value_map.h"
 #include "extensions/browser/extension_pref_value_map_factory.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/common/extension.h"
 #include "grit/components_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "url/gurl.h"
 
 using base::UserMetricsAction;
 
 namespace options {
 
 namespace {
 
-// Only allow changes to the metrics reporting checkbox if we were succesfully
-// able to change the service.
-bool AllowMetricsReportingChange(const base::Value* to_value) {
-  bool enable;
-  if (!to_value->GetAsBoolean(&enable)) {
-    NOTREACHED();
-    return false;
-  }
-
-  return enable == ResolveMetricsReportingEnabled(enable);
-}
-
 // Whether "controlledBy" property of pref value sent to options web UI needs to
 // be set to "extension" when the preference is controlled by an extension.
 bool CanSetExtensionControlledPrefValue(
     const PrefService::Preference* preference) {
 #if defined(OS_WIN)
   // These have more obvious UI than the standard one for extension controlled
   // values (an extension puzzle piece) on the settings page. To avoiding
   // showing the extension puzzle piece for these settings, their "controlledBy"
   // value should never be set to "extension".
   return preference->name() != prefs::kURLsToRestoreOnStartup &&
@@ skipping 14 matching lines @@
 CoreOptionsHandler::~CoreOptionsHandler() {}
 
 void CoreOptionsHandler::InitializeHandler() {
   Profile* profile = Profile::FromWebUI(web_ui());
 
   plugin_status_pref_setter_.Init(
       profile,
       base::Bind(&CoreOptionsHandler::OnPreferenceChanged,
                  base::Unretained(this),
                  profile->GetPrefs()));
-
-  pref_change_filters_[prefs::kMetricsReportingEnabled] =
-      base::Bind(&AllowMetricsReportingChange);
 }
 
 void CoreOptionsHandler::InitializePage() {
   UpdateClearPluginLSOData();
   UpdatePepperFlashSettingsEnabled();
 }
 
 void CoreOptionsHandler::GetLocalizedValues(
     base::DictionaryValue* localized_strings) {
   GetStaticLocalizedValues(localized_strings);
@@ skipping 546 matching lines @@
 }
 
 void CoreOptionsHandler::UpdatePepperFlashSettingsEnabled() {
   base::FundamentalValue enabled(
           plugin_status_pref_setter_.IsPepperFlashSettingsEnabled());
   web_ui()->CallJavascriptFunction(
       "OptionsPage.setPepperFlashSettingsEnabled", enabled);
 }
 
 }  // namespace options