Rework the way Widget::Init works:

chrome/browser/ui/views/dropdown_bar_host.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_DROPDOWN_BAR_HOST_H_
 #define CHROME_BROWSER_UI_VIEWS_DROPDOWN_BAR_HOST_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "content/common/native_web_keyboard_event.h"
@@ skipping 118 matching lines @@
 
   // The find bar widget needs rounded edges, so we create a polygon
   // that corresponds to the background images for this window (and
   // make the polygon only contain the pixels that we want to
   // draw). The polygon is then given to SetWindowRgn which changes
   // the window from being a rectangle in shape, to being a rect with
   // curved edges. We also check to see if the region should be
   // truncated to prevent from drawing onto Chrome's window border.
   void UpdateWindowEdges(const gfx::Rect& new_pos);
 
-  // Creates and returns the native Widget.
-  views::Widget* CreateHost();
-
   // Allows implementation to tweak widget position.
   void SetWidgetPositionNative(const gfx::Rect& new_pos, bool no_redraw);
 
   // Returns a keyboard event suitable for forwarding.
   NativeWebKeyboardEvent GetKeyboardEvent(
       const TabContents* contents,
       const views::KeyEvent& key_event);
 
   // Returns the animation for the dropdown.
   ui::SlideAnimation* animation() {
@@ skipping 30 matching lines @@
   scoped_ptr<views::Widget> host_;
 
   // A flag to manually manage visibility. GTK/X11 is asynchronous and
   // the state of the widget can be out of sync.
   bool is_visible_;
 
   DISALLOW_COPY_AND_ASSIGN(DropdownBarHost);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_DROPDOWN_BAR_HOST_H_