mash: Migrate ShelfLockingManager to ash/common.

ash/common/wm_shell.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 "ash/common/wm_shell.h"
 
 #include <utility>
 
 #include "ash/common/accessibility_delegate.h"
 #include "ash/common/focus_cycler.h"
@@ skipping 64 matching lines @@
 }
 
 void WmShell::AddShellObserver(ShellObserver* observer) {
   shell_observers_.AddObserver(observer);
 }
 
 void WmShell::RemoveShellObserver(ShellObserver* observer) {
   shell_observers_.RemoveObserver(observer);
 }
 
+void WmShell::OnLockStateEvent(LockStateObserver::EventType event) {
+  FOR_EACH_OBSERVER(LockStateObserver, lock_state_observers_,
+                    OnLockStateEvent(event));
+}
+
+void WmShell::AddLockStateObserver(LockStateObserver* observer) {
+  lock_state_observers_.AddObserver(observer);
+}
+
+void WmShell::RemoveLockStateObserver(LockStateObserver* observer) {
+  lock_state_observers_.RemoveObserver(observer);
+}
+
 WmShell::WmShell(std::unique_ptr<ShellDelegate> shell_delegate)
     : delegate_(std::move(shell_delegate)),
       focus_cycler_(new FocusCycler),
       system_tray_notifier_(new SystemTrayNotifier),
       window_selector_controller_(new WindowSelectorController) {
 #if defined(OS_CHROMEOS)
   brightness_control_delegate_.reset(new system::BrightnessControllerChromeos);
   keyboard_brightness_control_delegate_.reset(new KeyboardBrightnessController);
 #endif
   window_cycle_controller_.reset(new WindowCycleController());
@@ skipping 65 matching lines @@
 
 void WmShell::CreateMruWindowTracker() {
   mru_window_tracker_.reset(new MruWindowTracker);
 }
 
 void WmShell::DeleteMruWindowTracker() {
   mru_window_tracker_.reset();
 }
 
 }  // namespace ash