mash: Remove WorkspaceLayoutManagerDelegate.

ash/aura/wm_root_window_controller_aura.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/aura/wm_root_window_controller_aura.h"
 
 #include "ash/aura/wm_shelf_aura.h"
 #include "ash/aura/wm_shell_aura.h"
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/wm/workspace/workspace_layout_manager_backdrop_delegate.h"
@@ skipping 117 matching lines @@
 void WmRootWindowControllerAura::AddObserver(
     WmRootWindowControllerObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void WmRootWindowControllerAura::RemoveObserver(
     WmRootWindowControllerObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
-void WmRootWindowControllerAura::OnFullscreenStateChanged(
-    bool is_fullscreen,
-    WmWindow* root_window) {
-  if (WmWindowAura::GetAuraWindow(root_window) !=
-      root_window_controller_->GetRootWindow())
-    return;
-
-  FOR_EACH_OBSERVER(WmRootWindowControllerObserver, observers_,
-                    OnFullscreenStateChanged(is_fullscreen));
-}
-
 void WmRootWindowControllerAura::OnShelfAlignmentChanged(
     WmWindow* root_window) {
   if (WmWindowAura::GetAuraWindow(root_window) !=
       root_window_controller_->GetRootWindow())
     return;
 
   FOR_EACH_OBSERVER(WmRootWindowControllerObserver, observers_,
                     OnShelfAlignmentChanged());
 }
 
 void WmRootWindowControllerAura::OnDisplayAdded(
     const display::Display& display) {}
 
 void WmRootWindowControllerAura::OnDisplayRemoved(
     const display::Display& display) {}
 
 void WmRootWindowControllerAura::OnDisplayMetricsChanged(
     const display::Display& display,
     uint32_t metrics) {
   FOR_EACH_OBSERVER(WmRootWindowControllerObserver, observers_,
                     OnWorkAreaChanged());
 }
 
 }  // namespace ash