Makes WorkspaceLayoutManager use ash/wm/common types

components/mus/public/cpp/lib/window_private.h

 // Copyright 2014 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 COMPONENTS_MUS_PUBLIC_CPP_LIB_WINDOW_PRIVATE_H_
 #define COMPONENTS_MUS_PUBLIC_CPP_LIB_WINDOW_PRIVATE_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/macros.h"
 #include "components/mus/public/cpp/window.h"
 #include "mojo/public/cpp/bindings/array.h"
 
 namespace mus {
 
 // This class is a friend of a Window and contains functions to mutate internal
 // state of Window.
 class WindowPrivate {
  public:
   explicit WindowPrivate(Window* window);
   ~WindowPrivate();
 
   // Creates and returns a new Window. Caller owns the return value.
   static Window* LocalCreate();
 
-  base::ObserverList<WindowObserver>* observers() {
+  base::ObserverList<WindowObserver, true>* observers() {
     return &window_->observers_;
   }
 
   void ClearParent() { window_->parent_ = nullptr; }
 
   void ClearTransientParent() { window_->transient_parent_ = nullptr; }
 
   void set_visible(bool visible) { window_->visible_ = visible; }
 
   void set_parent_drawn(bool drawn) { window_->parent_drawn_ = drawn; }
@@ skipping 53 matching lines @@
 
  private:
   Window* window_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowPrivate);
 };
 
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_PUBLIC_CPP_LIB_WINDOW_PRIVATE_H_