Make javascript dialogs into top-level windows.

ui/views/win/hwnd_util_win.cc

 // 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.
 
 #include "ui/views/win/hwnd_util.h"
 
 #include "ui/views/widget/widget.h"
 
 namespace views {
 
 HWND HWNDForView(View* view) {
   return view->GetWidget() ? HWNDForWidget(view->GetWidget()) : NULL;
 }
 
 // Returns the HWND associated with the specified widget.
 HWND HWNDForWidget(Widget* widget) {
   return widget->GetNativeView();
 }
 
 HWND HWNDForNativeView(gfx::NativeView view) {
   return view;
 }
 
 HWND HWNDForNativeWindow(gfx::NativeWindow window) {
   return window;
 }
 
+gfx::Rect GetWindowBoundsForClientBounds(View* view,
+                                         const gfx::Rect& client_bounds) {
+  DCHECK(view);
+  HWND hwnd = view->GetWidget()->GetNativeWindow();
+  RECT rect = client_bounds.ToRECT();
+  DWORD style = ::GetWindowLong(hwnd, GWL_STYLE);
+  DWORD ex_style = ::GetWindowLong(hwnd, GWL_EXSTYLE);
+  AdjustWindowRectEx(&rect, style, FALSE, ex_style);
+  return gfx::Rect(rect);
 }
+
+}  // namespace views