mash: Remove WorkspaceLayoutManagerDelegate.

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/accelerators/accelerator_controller.h"
 #include "ash/common/accelerators/ash_focus_manager_factory.h"
@@ skipping 80 matching lines @@
 }
 
 void WmShell::OnMaximizeModeStarted() {
   FOR_EACH_OBSERVER(ShellObserver, shell_observers_, OnMaximizeModeStarted());
 }
 
 void WmShell::OnMaximizeModeEnded() {
   FOR_EACH_OBSERVER(ShellObserver, shell_observers_, OnMaximizeModeEnded());
 }
 
+void WmShell::NotifyFullscreenStateChanged(bool is_fullscreen,
+                                           WmWindow* root_window) {
+  FOR_EACH_OBSERVER(ShellObserver, shell_observers_,
+                    OnFullscreenStateChanged(is_fullscreen, root_window));
+}
+
 void WmShell::NotifyPinnedStateChanged(WmWindow* pinned_window) {
   FOR_EACH_OBSERVER(ShellObserver, shell_observers_,
                     OnPinnedStateChanged(pinned_window));
 }
 
 void WmShell::OnVirtualKeyboardActivated(bool activated) {
   FOR_EACH_OBSERVER(ShellObserver, shell_observers_,
                     OnVirtualKeyboardStateChanged(activated));
 }
 
@@ skipping 156 matching lines @@
 void WmShell::DeleteToastManager() {
   toast_manager_.reset();
 }
 
 void WmShell::SetAcceleratorController(
     std::unique_ptr<AcceleratorController> accelerator_controller) {
   accelerator_controller_ = std::move(accelerator_controller);
 }
 
 }  // namespace ash