Rework the way Widget::Init works:

chrome/browser/chromeos/notifications/balloon_view.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/notifications/balloon_view.h"
 
 #include <vector>
 
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
@@ skipping 249 matching lines @@
   if (html_contents_->render_view_host()) {
     RenderWidgetHostView* view = html_contents_->render_view_host()->view();
     if (view)
       view->SetSize(size);
   }
 }
 
 void BalloonViewImpl::ViewHierarchyChanged(
     bool is_add, View* parent, View* child) {
   if (is_add && GetWidget() && !control_view_host_.get() && controls_) {
+    control_view_host_.reset(views::Widget::CreateWidget());
+    static_cast<views::WidgetGtk*>(control_view_host_.get())->
+        EnableDoubleBuffer(true);
     views::Widget::CreateParams params(
         views::Widget::CreateParams::TYPE_CONTROL);
     params.delete_on_destroy = false;
-    control_view_host_.reset(views::Widget::CreateWidget(params));
-    static_cast<views::WidgetGtk*>(control_view_host_.get())->
-        EnableDoubleBuffer(true);
-    control_view_host_->Init(GetParentNativeView(), gfx::Rect());
+    params.parent = GetParentNativeView();
+    control_view_host_->Init(params);
     NotificationControlView* control = new NotificationControlView(this);
     control_view_host_->SetContentsView(control);
   }
-  if (!is_add && this == child && control_view_host_.get() && controls_) {
+  if (!is_add && this == child && control_view_host_.get() && controls_)
     control_view_host_.release()->CloseNow();
-  }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NotificationObserver overrides.
 
 void BalloonViewImpl::Observe(NotificationType type,
                               const NotificationSource& source,
                               const NotificationDetails& details) {
   if (type != NotificationType::NOTIFY_BALLOON_DISCONNECTED) {
     NOTREACHED();
@@ skipping 50 matching lines @@
   service->DenyPermission(balloon_->notification().origin_url());
 }
 
 gfx::NativeView BalloonViewImpl::GetParentNativeView() {
   RenderWidgetHostView* view = html_contents_->render_view_host()->view();
   DCHECK(view);
   return view->GetNativeView();
 }
 
 }  // namespace chromeos