Make BubbleWindow a Widget override with a BubbleFrameView.

chrome/browser/chromeos/frame/bubble_window_gtk.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 "chrome/browser/chromeos/frame/bubble_window.h"
-
-#include <gtk/gtk.h>
-
-#include "chrome/browser/chromeos/frame/bubble_frame_view.h"
-#include "ui/gfx/skia_utils_gtk.h"
-#include "ui/views/window/non_client_view.h"
-
-namespace chromeos {
-
-BubbleWindow::BubbleWindow(views::Widget* window,
-    DialogStyle style)
-    : views::NativeWidgetGtk(window),
-      style_(style) {
-}
-
-void BubbleWindow::InitNativeWidget(const views::Widget::InitParams& params) {
-  views::NativeWidgetGtk::InitNativeWidget(params);
-
-  // Turn on double buffering so that the hosted GtkWidgets does not
-  // flash as in http://crosbug.com/9065.
-  EnableDoubleBuffer(true);
-
-  GdkColor background_color =
-      gfx::SkColorToGdkColor(kBubbleWindowBackgroundColor);
-  gtk_widget_modify_bg(GetNativeView(), GTK_STATE_NORMAL, &background_color);
-
-  // A work-around for http://crosbug.com/8538. All GdkWindow of top-level
-  // GtkWindow should participate _NET_WM_SYNC_REQUEST protocol and window
-  // manager should only show the window after getting notified. And we
-  // should only notify window manager after at least one paint is done.
-  // TODO(xiyuan): Figure out the right fix.
-  gtk_widget_realize(GetNativeView());
-  gdk_window_set_back_pixmap(GetNativeView()->window, NULL, FALSE);
-  gtk_widget_realize(window_contents());
-  gdk_window_set_back_pixmap(window_contents()->window, NULL, FALSE);
-}
-
-views::NonClientFrameView* BubbleWindow::CreateNonClientFrameView() {
-  views::Widget* window = GetWidget();
-  return new BubbleFrameView(window, window->widget_delegate(), style_);
-}
-
-views::Widget* BubbleWindow::Create(
-    gfx::NativeWindow parent,
-    DialogStyle style,
-    views::WidgetDelegate* widget_delegate) {
-  views::Widget* window = new views::Widget;
-  BubbleWindow* bubble_window = new BubbleWindow(window, style);
-  views::Widget::InitParams params;
-  params.delegate = widget_delegate;
-  params.native_widget = bubble_window;
-  params.parent = GTK_WIDGET(parent);
-  params.bounds = gfx::Rect();
-  window->Init(params);
-
-  return window;
-}
-
-}  // namespace chromeos