Move a bunch of windows stuff from ui/base/win to ui/gfx/win

ui/base/win/hidden_window.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/base/win/hidden_window.h"
 
-#include "ui/base/win/window_impl.h"
+#include "ui/gfx/win/window_impl.h"
 
 namespace ui {
 
 namespace {
 
 // We need to have a parent window for the compositing code to work correctly.
 //
 // A tab will not have a parent HWND whenever it is not active in its
 // host window - for example at creation time and when it's in the
 // background, so we provide a default widget to host them.
 //
 // It may be tempting to use GetDesktopWindow() instead, but this is
 // problematic as the shell sends messages to children of the desktop
 // window that interact poorly with us.
 //
 // See: http://crbug.com/16476
-class TempParent : public ui::WindowImpl {
+class TempParent : public gfx::WindowImpl {
  public:
   static TempParent* Get() {
     static TempParent* g_temp_parent;
     if (!g_temp_parent) {
       g_temp_parent = new TempParent();
 
       g_temp_parent->set_window_style(WS_POPUP);
       g_temp_parent->set_window_ex_style(WS_EX_TOOLWINDOW);
       g_temp_parent->Init(GetDesktopWindow(), gfx::Rect());
       EnableWindow(g_temp_parent->hwnd(), FALSE);
@@ skipping 12 matching lines @@
   END_MSG_MAP()
 };
 
 }  // namespace
 
 HWND GetHiddenWindow() {
   return TempParent::Get()->hwnd();
 }
 
 }  // namespace ui