Move Aura to UI subdir.

aura/focus_manager.cc

-// Copyright (c) 2011 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 "aura/focus_manager.h"
-
-#include "aura/window.h"
-#include "aura/window_delegate.h"
-
-namespace aura {
-namespace internal {
-
-FocusManager::FocusManager(Window* owner)
-    : owner_(owner),
-      focused_window_(NULL) {
-}
-
-FocusManager::~FocusManager() {
-}
-
-void FocusManager::SetFocusedWindow(Window* focused_window) {
-  if (focused_window == focused_window_)
-    return;
-  if (focused_window_)
-    focused_window_->delegate()->OnBlur();
-  focused_window_ = focused_window;
-  if (focused_window_)
-    focused_window_->delegate()->OnFocus();
-}
-
-}  // namespace internal
-}  // namespace aura