Add a drop shadow to the fullscreen exit bubble on windows.

chrome/browser/ui/views/autocomplete/autocomplete_popup_contents_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/ui/views/autocomplete/autocomplete_popup_contents_view.h"
 
 #if defined(OS_WIN)
 #include <commctrl.h>
 #include <dwmapi.h>
 #include <objidl.h>
@@ skipping 208 matching lines @@
       omnibox_view_(omnibox_view),
       profile_(edit_model->profile()),
       location_bar_(location_bar),
       result_font_(font.DeriveFont(kEditFontAdjust)),
       result_bold_font_(result_font_.DeriveFont(0, gfx::Font::BOLD)),
       ignore_mouse_drag_(false),
       ALLOW_THIS_IN_INITIALIZER_LIST(size_animation_(this)) {
   // The following little dance is required because set_border() requires a
   // pointer to a non-const object.
   views::BubbleBorder* bubble_border =
-      new views::BubbleBorder(views::BubbleBorder::NONE);
+      new views::BubbleBorder(views::BubbleBorder::NONE,
+                              views::BubbleBorder::NO_SHADOW);
   bubble_border_ = bubble_border;
   set_border(bubble_border);
   // The contents is owned by the LocationBarView.
   set_parent_owned(false);
 }
 
 AutocompletePopupContentsView::~AutocompletePopupContentsView() {
   // We don't need to do anything with |popup_| here.  The OS either has already
   // closed the window, in which case it's been deleted, or it will soon, in
   // which case there's nothing we need to do.
@@ skipping 447 matching lines @@
   opt_in_view_ = NULL;
   PromoCounter* counter = profile_->GetInstantPromoCounter();
   DCHECK(counter);
   counter->Hide();
   if (opt_in) {
     browser::ShowInstantConfirmDialogIfNecessary(
         location_bar_->GetWidget()->GetNativeWindow(), profile_);
   }
   UpdatePopupAppearance();
 }