chromeos: Converts WorkspaceLayoutManager to aura::LayoutManager

ash/wm/mru_window_tracker.cc

 // Copyright 2013 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/mru_window_tracker.h"
 
 #include <algorithm>
 
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/shell.h"
@@ skipping 58 matching lines @@
       ++itr;
   }
 
   // Put the windows in the mru_windows list at the head, if it's available.
   if (mru_windows) {
     // Iterate through the list backwards, so that we can move each window to
     // the front of the windows list as we find them.
     for (auto ix = mru_windows->rbegin(); ix != mru_windows->rend(); ++ix) {
       // Exclude windows in non-switchable containers and those which cannot
       // be activated.
-      if (!wm::IsSwitchableContainer((*ix)->GetParent()) ||
+      if (((*ix)->GetParent() &&
+           !wm::IsSwitchableContainer((*ix)->GetParent()->aura_window())) ||
           !should_include_window_predicate.Run(*ix)) {
         continue;
       }
 
       MruWindowTracker::WindowList::iterator window =
           std::find(windows.begin(), windows.end(), *ix);
       if (window != windows.end()) {
         windows.erase(window);
         windows.push_back(*ix);
       }
@@ skipping 66 matching lines @@
 
 void MruWindowTracker::OnWindowDestroyed(aura::Window* window) {
   // It's possible for OnWindowActivated() to be called after
   // OnWindowDestroying(). This means we need to override OnWindowDestroyed()
   // else we may end up with a deleted window in |mru_windows_|.
   mru_windows_.remove(WmWindow::Get(window));
   window->RemoveObserver(this);
 }
 
 }  // namespace ash