Attempt 2 at:...

chrome/browser/views/autocomplete/autocomplete_popup_contents_view.cc

 // Copyright (c) 2009 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/views/autocomplete/autocomplete_popup_contents_view.h"
 
 #include "app/gfx/canvas.h"
 #include "app/gfx/color_utils.h"
 #include "app/gfx/insets.h"
 #include "app/gfx/path.h"
@@ skipping 839 matching lines @@
   // Translate the contents rect into widget coordinates, since that's what
   // DwmEnableBlurBehindWindow expects a region in.
   gfx::Rect contents_rect = GetLocalBounds(false);
   gfx::Point origin(contents_rect.origin());
   views::View::ConvertPointToWidget(this, &origin);
   contents_rect.set_origin(origin);
 
   gfx::Path contents_path;
   MakeContentsPath(&contents_path, contents_rect);
   ScopedGDIObject<HRGN> popup_region;
-  popup_region.Set(contents_path.CreateHRGN());
+  popup_region.Set(contents_path.CreateNativeRegion());
   bb.hRgnBlur = popup_region.Get();
   DwmEnableBlurBehindWindow(GetWidget()->GetNativeView(), &bb);
 #endif
 }
 
 void AutocompletePopupContentsView::MakeCanvasTransparent(
     gfx::Canvas* canvas) {
   // Allow the window blur effect to show through the popup background.
   SkAlpha alpha = GetThemeProvider()->ShouldUseNativeFrame() ?
       kGlassPopupAlpha : kOpaquePopupAlpha;
   canvas->drawColor(SkColorSetA(GetColor(NORMAL, BACKGROUND), alpha),
                     SkXfermode::kDstIn_Mode);
 }
 
 // static
 AutocompletePopupView* AutocompletePopupView::CreatePopupView(
     const gfx::Font& font,
     AutocompleteEditView* edit_view,
     AutocompleteEditModel* edit_model,
     Profile* profile,
     const BubblePositioner* bubble_positioner) {
   return new AutocompletePopupContentsView(font, edit_view, edit_model,
                                            profile, bubble_positioner);
 }