Ignore fullscreen windows which are behind other windows for fullscreen mode.

ash/wm/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/workspace/workspace_layout_manager.h"
 
 #include "ash/display/display_controller.h"
 #include "ash/root_window_controller.h"
 #include "ash/screen_ash.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 139 matching lines @@
 void WorkspaceLayoutManager::OnWindowPropertyChanged(Window* window,
                                                      const void* key,
                                                      intptr_t old) {
   if (key == aura::client::kAlwaysOnTopKey &&
       window->GetProperty(aura::client::kAlwaysOnTopKey)) {
     GetRootWindowController(window->GetRootWindow())->
         always_on_top_controller()->GetContainer(window)->AddChild(window);
   }
 }
 
+void WorkspaceLayoutManager::OnWindowStackingChanged(aura::Window* window) {
+  BaseLayoutManager::OnWindowStackingChanged(window);
+  UpdateDesktopVisibility();
+}
+
 void WorkspaceLayoutManager::OnTrackedByWorkspaceChanged(
     wm::WindowState* window_state,
     bool old){
   if (window_state->tracked_by_workspace()) {
     if (!SetMaximizedOrFullscreenBounds(window_state)) {
       gfx::Rect bounds = window_state->window()->bounds();
       AdjustSnappedBounds(window_state, &bounds);
       if (window_state->window()->bounds() != bounds)
         SetChildBoundsDirect(window_state->window(), bounds);
     }
@@ skipping 263 matching lines @@
   ui::ScopedLayerAnimationSettings slide_settings(layer->GetAnimator());
   slide_settings.SetPreemptionStrategy(
       ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
   slide_settings.SetTransitionDuration(
       base::TimeDelta::FromMilliseconds(kBoundsChangeSlideDurationMs));
   SetChildBoundsDirect(child, bounds);
 }
 
 }  // namespace internal
 }  // namespace ash