mash: Remove WorkspaceLayoutManagerDelegate.

ash/mus/bridge/wm_root_window_controller_mus.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/mus/bridge/wm_root_window_controller_mus.h"
 
 #include "ash/common/wm/workspace/workspace_layout_manager.h"
 #include "ash/common/wm/workspace/workspace_layout_manager_backdrop_delegate.h"
 #include "ash/common/wm_root_window_controller_observer.h"
 #include "ash/mus/bridge/wm_shelf_mus.h"
@@ skipping 37 matching lines @@
 
 // static
 const WmRootWindowControllerMus* WmRootWindowControllerMus::Get(
     const ui::Window* window) {
   if (!window)
     return nullptr;
 
   return window->GetRoot()->GetLocalProperty(kWmRootWindowControllerKey);
 }
 
-void WmRootWindowControllerMus::NotifyFullscreenStateChange(
-    bool is_fullscreen) {
-  FOR_EACH_OBSERVER(WmRootWindowControllerObserver, observers_,
-                    OnFullscreenStateChanged(is_fullscreen));
-}
-
 gfx::Point WmRootWindowControllerMus::ConvertPointToScreen(
     const WmWindowMus* source,
     const gfx::Point& point) const {
   gfx::Point point_in_root =
       source->ConvertPointToTarget(source->GetRootWindow(), point);
   point_in_root += GetDisplay().bounds().OffsetFromOrigin();
   return point_in_root;
 }
 
 gfx::Point WmRootWindowControllerMus::ConvertPointFromScreen(
@@ skipping 76 matching lines @@
   observers_.AddObserver(observer);
 }
 
 void WmRootWindowControllerMus::RemoveObserver(
     WmRootWindowControllerObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 }  // namespace mus
 }  // namespace ash