Removes |old| parameter from OnWindowPropertyChanged()

ash/wm/common/workspace/workspace_layout_manager.cc

 // Copyright (c) 2012 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/wm/common/workspace/workspace_layout_manager.h"
 
 #include <algorithm>
 
 #include "ash/wm/common/always_on_top_controller.h"
 #include "ash/wm/common/fullscreen_window_finder.h"
@@ skipping 197 matching lines @@
   // TODO(flackr): Track the active window leaving this root window and update
   // the fullscreen state accordingly.
   if (params.new_parent && params.new_parent->GetRootWindow() == root_window_) {
     UpdateFullscreenState();
     UpdateShelfVisibility();
   }
 }
 
 void WorkspaceLayoutManager::OnWindowPropertyChanged(
     wm::WmWindow* window,
-    wm::WmWindowProperty property,
-    intptr_t old) {
+    wm::WmWindowProperty property) {
   if (property == wm::WmWindowProperty::ALWAYS_ON_TOP &&
       window->GetBoolProperty(wm::WmWindowProperty::ALWAYS_ON_TOP)) {
     root_window_controller_->GetAlwaysOnTopController()
         ->GetContainer(window)
         ->AddChild(window);
   }
 }
 
 void WorkspaceLayoutManager::OnWindowStackingChanged(wm::WmWindow* window) {
   UpdateShelfVisibility();
@@ skipping 93 matching lines @@
   if (!delegate_)
     return;
   bool is_fullscreen = GetWindowForFullscreenMode(window_) != nullptr;
   if (is_fullscreen != is_fullscreen_) {
     delegate_->OnFullscreenStateChanged(is_fullscreen);
     is_fullscreen_ = is_fullscreen;
   }
 }
 
 }  // namespace ash