Fixes bug where FocusController would stack a layer directly above a

ui/aura/test/test_window_delegate.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 "ui/aura/test/test_window_delegate.h"
 
 #include "base/stringprintf.h"
 #include "ui/aura/window.h"
 #include "ui/base/events/event.h"
 #include "ui/base/hit_test.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/path.h"
 #include "ui/gfx/skia_util.h"
 
 namespace aura {
 namespace test {
 
 ////////////////////////////////////////////////////////////////////////////////
 // TestWindowDelegate
 
 TestWindowDelegate::TestWindowDelegate()
     : window_component_(HTCLIENT),
-      delete_on_destroyed_(false) {
+      delete_on_destroyed_(false),
+      can_focus_(true) {
 }
 
 TestWindowDelegate::~TestWindowDelegate() {
 }
 
 // static
 TestWindowDelegate* TestWindowDelegate::CreateSelfDestroyingDelegate() {
   TestWindowDelegate* delegate = new TestWindowDelegate;
   delegate->delete_on_destroyed_ = true;
   return delegate;
@@ skipping 19 matching lines @@
   return window_component_;
 }
 
 bool TestWindowDelegate::ShouldDescendIntoChildForEventHandling(
       Window* child,
       const gfx::Point& location) {
   return true;
 }
 
 bool TestWindowDelegate::CanFocus() {
-  return true;
+  return can_focus_;
 }
 
 void TestWindowDelegate::OnCaptureLost() {
 }
 
 void TestWindowDelegate::OnPaint(gfx::Canvas* canvas) {
 }
 
 void TestWindowDelegate::OnDeviceScaleFactorChanged(
     float device_scale_factor) {
@@ skipping 132 matching lines @@
   std::string result = base::StringPrintf("%d %d",
                                           key_press_count_,
                                           key_release_count_);
   key_press_count_ = 0;
   key_release_count_ = 0;
   return result;
 }
 
 }  // namespace test
 }  // namespace aura