Updated DropdownBarHost to use Layer clipping instead of OnPaint() clipping.

chrome/browser/ui/views/location_bar/location_bar_view.cc

 // Copyright (c) 2012 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/location_bar/location_bar_view.h"
 
 #include <algorithm>
 #include <map>
 
 #include "base/i18n/rtl.h"
@@ skipping 126 matching lines @@
       zoom_view_(NULL),
       open_pdf_in_reader_view_(NULL),
       manage_passwords_icon_view_(NULL),
       save_credit_card_icon_view_(nullptr),
       translate_icon_view_(NULL),
       star_view_(NULL),
       size_animation_(this),
       is_popup_mode_(is_popup_mode),
       show_focus_rect_(false),
       template_url_service_(NULL),
-      dropdown_animation_offset_(0),
       web_contents_null_at_last_refresh_(true) {
   edit_bookmarks_enabled_.Init(
       bookmarks::prefs::kEditBookmarksEnabled, profile->GetPrefs(),
       base::Bind(&LocationBarView::UpdateWithoutTabRestore,
                  base::Unretained(this)));
 
   ui_zoom::ZoomEventManager::GetForBrowserContext(profile)
       ->AddZoomEventManagerObserver(this);
 }
 
@@ skipping 1216 matching lines @@
   return delegate_->GetToolbarModel();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // LocationBarView, private DropdownBarHostDelegate implementation:
 
 void LocationBarView::SetFocusAndSelection(bool select_all) {
   FocusLocation(select_all);
 }
 
-void LocationBarView::SetAnimationOffset(int offset) {
-  dropdown_animation_offset_ = offset;
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // LocationBarView, private TemplateURLServiceObserver implementation:
 
 void LocationBarView::OnTemplateURLServiceChanged() {
   template_url_service_->RemoveObserver(this);
   template_url_service_ = NULL;
   // If the browser is no longer active, let's not show the info bubble, as this
   // would make the browser the active window again.
   if (omnibox_view_ && omnibox_view_->GetWidget()->IsActive())
     ShowFirstRunBubble();
 }