Use mojo SystemTray interfaces for both mash and classic ash

chrome/browser/ui/ash/system_tray_common.cc

 // Copyright 2016 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/ash/system_tray_common.h"
 
 #include "base/logging.h"
 #include "chrome/browser/chromeos/accessibility/accessibility_util.h"
 #include "chrome/browser/chromeos/login/ui/login_display_host.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 23 matching lines @@
 const char SystemTrayCommon::kDisplaySettingsSubPageName[] = "display";
 const char SystemTrayCommon::kDisplayOverscanSettingsSubPageName[] =
     "displayOverscan";
 
 // static
 void SystemTrayCommon::ShowSettings() {
   ShowSettingsSubPageForActiveUser(std::string());
 }
 
 // static
-void SystemTrayCommon::ShowDateSettings() {
-  content::RecordAction(base::UserMetricsAction("ShowDateOptions"));
-  std::string sub_page =
-      std::string(chrome::kSearchSubPage) + "#" +
-      l10n_util::GetStringUTF8(IDS_OPTIONS_SETTINGS_SECTION_TITLE_DATETIME);
-  // Everybody can change the time zone (even though it is a device setting).
-  chrome::ShowSettingsSubPageForProfile(ProfileManager::GetActiveUserProfile(),
-                                        sub_page);
-}
-
-// static
 void SystemTrayCommon::ShowDisplaySettings() {
   content::RecordAction(base::UserMetricsAction("ShowDisplayOptions"));
   ShowSettingsSubPageForActiveUser(kDisplaySettingsSubPageName);
 }
 
 // static
 void SystemTrayCommon::ShowChromeSlow() {
   chrome::ScopedTabbedBrowserDisplayer displayer(
       ProfileManager::GetPrimaryUserProfile());
   chrome::ShowSlow(displayer.browser());
@@ skipping 49 matching lines @@
 }
 
 // static
 void SystemTrayCommon::ShowProxySettings() {
   LoginState* login_state = LoginState::Get();
   // User is not logged in.
   CHECK(!login_state->IsUserLoggedIn() ||
         login_state->GetLoggedInUserType() == LoginState::LOGGED_IN_USER_NONE);
   chromeos::LoginDisplayHost::default_host()->OpenProxySettings();
 }