Fix the white flicker of the keyboard overlay when it first appearing.

chrome/browser/ui/views/keyboard_overlay_dialog_view.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 "chrome/browser/ui/views/keyboard_overlay_dialog_view.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/views/keyboard_overlay_delegate.h"
 #include "chrome/browser/ui/webui/web_dialog_delegate.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/widget/widget.h"
 
 KeyboardOverlayDialogView::KeyboardOverlayDialogView(
     Profile* profile,
     WebDialogDelegate* delegate)
     : WebDialogView(profile, NULL, delegate) {
 }
 
 KeyboardOverlayDialogView::~KeyboardOverlayDialogView() {
 }
 
 void KeyboardOverlayDialogView::ShowDialog() {
-
   KeyboardOverlayDelegate* delegate = new KeyboardOverlayDelegate(
       l10n_util::GetStringUTF16(IDS_KEYBOARD_OVERLAY_TITLE));
   KeyboardOverlayDialogView* view = new KeyboardOverlayDialogView(
       ProfileManager::GetDefaultProfileOrOffTheRecord(), delegate);
-  delegate->set_view(view);
-
-  views::Widget* widget = new views::Widget;
-  views::Widget::InitParams params(
-      views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
-  params.delegate = view;
-  widget->Init(params);
-
-  // Show the widget at the bottom of the work area.
-  gfx::Size size;
-  delegate->GetDialogSize(&size);
-  gfx::Rect rect = gfx::Screen::GetMonitorNearestWindow(
-      view->GetWidget()->GetNativeView()).work_area();
-  gfx::Rect bounds((rect.width() - size.width()) / 2,
-                   rect.height() - size.height(),
-                   size.width(),
-                   size.height());
-  view->GetWidget()->SetBounds(bounds);
-  view->GetWidget()->Show();
+  delegate->Show(view);
 }