mash: Move ShelfWindowWatcher[ItemDelegate] to ash/common.

ash/aura/wm_window_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_window_aura.h"
 
 #include "ash/aura/aura_layout_manager_adapter.h"
 #include "ash/aura/wm_root_window_controller_aura.h"
 #include "ash/aura/wm_shell_aura.h"
 #include "ash/common/ash_constants.h"
@@ skipping 273 matching lines @@
     return;
   }
 
   NOTREACHED();
 }
 
 ShelfItemDetails* WmWindowAura::GetShelfItemDetails() {
   return window_->GetProperty(kShelfItemDetailsKey);
 }
 
+void WmWindowAura::SetShelfItemDetails(const ShelfItemDetails& details) {
+  // |item_details| is owned by |window_|.
+  ShelfItemDetails* item_details = new ShelfItemDetails(details);
+  window_->SetProperty(kShelfItemDetailsKey, item_details);
+}
+
+void WmWindowAura::ClearShelfItemDetails() {
+  window_->ClearProperty(kShelfItemDetailsKey);
+}
+
 const wm::WindowState* WmWindowAura::GetWindowState() const {
   return ash::wm::GetWindowState(window_);
 }
 
 WmWindow* WmWindowAura::GetToplevelWindow() {
   return Get(window_->GetToplevelWindow());
 }
 
 WmWindow* WmWindowAura::GetToplevelWindowForFocus() {
   return Get(::wm::GetToplevelWindow(window_));
@@ skipping 457 matching lines @@
                                              bool visible) {
   FOR_EACH_OBSERVER(WmWindowObserver, observers_,
                     OnWindowVisibilityChanged(this, visible));
 }
 
 void WmWindowAura::OnWindowTitleChanged(aura::Window* window) {
   FOR_EACH_OBSERVER(WmWindowObserver, observers_, OnWindowTitleChanged(this));
 }
 
 }  // namespace ash