Makes sure switching workspaces only animations windows that want to

ash/wm/workspace/workspace_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/workspace/workspace_manager.h"
 
 #include <algorithm>
 
 #include "ash/shell.h"
 #include "ash/wm/property_util.h"
@@ skipping 262 matching lines @@
   BuildWindowList(workspace->windows(), &children);
   SetWindowLayerVisibility(children, change_type, value);
 }
 
 void WorkspaceManager::SetWindowLayerVisibility(
     const std::vector<aura::Window*>& windows,
     AnimateChangeType change_type,
     bool value) {
   for (size_t i = 0; i < windows.size(); ++i) {
     ui::Layer* layer = windows[i]->layer();
-    if (layer) {
+    // Only show the layer for windows that want to be visible.
+    if (layer && (!value || windows[i]->TargetVisibility())) {
       windows[i]->SetProperty(aura::client::kAnimationsDisabledKey,
                               change_type == DONT_ANIMATE);
       bool update_layer = true;
       if (change_type == ANIMATE) {
         ash::SetWindowVisibilityAnimationType(
             windows[i],
             value ? ash::WINDOW_VISIBILITY_ANIMATION_TYPE_WORKSPACE_SHOW :
                     ash::WINDOW_VISIBILITY_ANIMATION_TYPE_WORKSPACE_HIDE);
         if (ash::internal::AnimateOnChildWindowVisibilityChanged(
                 windows[i], value))
@@ skipping 122 matching lines @@
   if (type == Workspace::TYPE_MAXIMIZED)
     workspace = new MaximizedWorkspace(this);
   else
     workspace = new ManagedWorkspace(this);
   AddWorkspace(workspace);
   return workspace;
 }
 
 }  // namespace internal
 }  // namespace ash