Make javascript dialogs into top-level windows.

ui/views/win/hwnd_util.h

 // Copyright (c) 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.
 
 #ifndef UI_VIEWS_WIN_HWND_UTIL_H_
 #define UI_VIEWS_WIN_HWND_UTIL_H_
 
 #include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/rect.h"
 #include "ui/views/views_export.h"
 
 namespace views {
 
 class View;
 class Widget;
 
 // Returns the HWND for the specified View.
 VIEWS_EXPORT HWND HWNDForView(View* view);
 
 // Returns the HWND for the specified Widget.
 VIEWS_EXPORT HWND HWNDForWidget(Widget* widget);
 
 // Returns the HWND for the specified NativeView.
 VIEWS_EXPORT HWND HWNDForNativeView(gfx::NativeView view);
 
 // Returns the HWND for the specified NativeWindow.
 VIEWS_EXPORT HWND HWNDForNativeWindow(gfx::NativeWindow window);
 
+VIEWS_EXPORT gfx::Rect GetWindowBoundsForClientBounds(
+    View* view, const gfx::Rect& client_bounds);
 }
 
 #endif  // UI_VIEWS_WIN_HWND_UTIL_H_