chromeos: Refactor system tray "show settings" commands to use mojo

ash/common/system/tray/system_tray_controller.h

 // 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.
 
 #ifndef ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_CONTROLLER_H_
 #define ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_CONTROLLER_H_
 
 #include "ash/public/interfaces/system_tray.mojom.h"
 #include "base/i18n/time_formatting.h"
 #include "base/macros.h"
@@ skipping 16 matching lines @@
 // Only connects to the actual mojom::SystemTrayClient interface when running on
 // Chrome OS. In tests and on Windows all operations are no-ops.
 //
 // TODO: Consider renaming this to SystemTrayClient or renaming the current
 // SystemTray to SystemTrayView and making this class SystemTray.
 class SystemTrayController : public mojom::SystemTray {
  public:
   explicit SystemTrayController(shell::Connector* connector);
   ~SystemTrayController() override;
 
+  base::HourClockType hour_clock_type() const { return hour_clock_type_; }
+
   // Wrappers around the mojom::SystemTrayClient interface.
-  base::HourClockType hour_clock_type() const { return hour_clock_type_; }
+  void ShowSettings();
   void ShowDateSettings();
+  void ShowDisplaySettings();
+  void ShowPowerSettings();
+  void ShowChromeSlow();
+  void ShowIMESettings();
+  void ShowHelp();
+  void ShowAccessibilityHelp();
+  void ShowAccessibilitySettings();
+  void ShowPaletteHelp();
+  void ShowPaletteSettings();
+  void ShowPublicAccountInfo();
+  void ShowProxySettings();
 
   // Binds the mojom::SystemTray interface to this object.
   void BindRequest(mojom::SystemTrayRequest request);
 
  private:
   // Connects or reconnects to the mojom::SystemTrayClient interface when
   // running on Chrome OS. Otherwise does nothing. Returns true if connected.
   bool ConnectToSystemTrayClient();
 
   // Handles errors on the |system_tray_client_| interface connection.
@@ skipping 13 matching lines @@
 
   // The type of clock hour display: 12 or 24 hour.
   base::HourClockType hour_clock_type_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTrayController);
 };
 
 }  // namspace ash
 
 #endif  // ASH_COMMON_SYSTEM_TRAY_SYSTEM_TRAY_CONTROLLER_H_