Rework the way Widget::Init works:

chrome/browser/ui/views/browser_bubble_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/ui/views/browser_bubble.h"
 
 #include <vector>
 
 #include "chrome/browser/ui/views/bubble/border_contents.h"
 #include "chrome/browser/ui/views/frame/browser_view.h"
 #include "views/widget/root_view.h"
 #include "views/widget/widget_gtk.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/wm_ipc.h"
 #include "third_party/cros/chromeos_wm_ipc_enums.h"
 #endif
 
 using std::vector;
 
 namespace {
 
 class BubbleWidget : public views::WidgetGtk {
  public:
   explicit BubbleWidget(BrowserBubble* bubble)
-      : views::WidgetGtk(views::WidgetGtk::TYPE_WINDOW),
-        bubble_(bubble),
+      : bubble_(bubble),
         border_contents_(new BorderContents) {
     border_contents_->Init();
   }
 
   void ShowAndActivate(bool activate) {
     // TODO: honor activate.
     views::WidgetGtk::Show();
   }
 
   virtual void Close() {
@@ skipping 50 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(BubbleWidget);
 };
 
 }  // namespace
 
 void BrowserBubble::InitPopup() {
   // TODO(port)
   BubbleWidget* pop = new BubbleWidget(this);
   pop->MakeTransparent();
   pop->make_transient_to_parent();
-  pop->Init(frame_->GetNativeView(), gfx::Rect());
+  views::Widget::CreateParams params(views::Widget::CreateParams::TYPE_WINDOW);
+  params.parent = frame_->GetNativeView();
+  pop->Init(params);
 #if defined(OS_CHROMEOS)
   {
     vector<int> params;
     params.push_back(0);  // don't show while screen is locked
     chromeos::WmIpc::instance()->SetWindowType(
         pop->GetNativeView(),
         chromeos::WM_IPC_WINDOW_CHROME_INFO_BUBBLE,
         &params);
   }
 #endif
@@ skipping 46 matching lines @@
   gfx::Rect contents_bounds;
   border_contents->SizeAndGetBounds(GetAbsoluteRelativeTo(),
       arrow_location_, false, view_->size(),
       &contents_bounds, &window_bounds);
 
   border_contents->SetBoundsRect(gfx::Rect(gfx::Point(), window_bounds.size()));
   view_->SetBoundsRect(contents_bounds);
 
   SetAbsoluteBounds(window_bounds);
 }