Use Chrome facilities for omnibox state save and restore on Mac.

chrome/browser/cocoa/location_bar_view_mac.mm

 // 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.
 
 #import "chrome/browser/cocoa/location_bar_view_mac.h"
 
 #include "base/string_util.h"
 #include "chrome/app/chrome_dll_resource.h"
 #include "chrome/browser/alternate_nav_url_fetcher.h"
 #import "chrome/browser/app_controller_mac.h"
@@ skipping 38 matching lines @@
 
 void LocationBarViewMac::FocusLocation() {
   edit_view_->FocusLocation();
 }
 
 void LocationBarViewMac::SaveStateToContents(TabContents* contents) {
   // TODO(shess): Why SaveStateToContents vs SaveStateToTab?
   edit_view_->SaveStateToTab(contents);
 }
 
+void LocationBarViewMac::Update(const TabContents* contents,
+                                bool should_restore_state) {
+  // AutocompleteEditView restores state if the tab is non-NULL.
+  edit_view_->Update(should_restore_state ? contents : NULL);
+}
+
 void LocationBarViewMac::OnAutocompleteAccept(const GURL& url,
                                               WindowOpenDisposition disposition,
                                               PageTransition::Type transition,
                                               const GURL& alternate_nav_url) {
   if (!url.is_valid())
     return;
 
   location_input_ = UTF8ToWide(url.spec());
   disposition_ = disposition;
   transition_ = transition;
@@ skipping 36 matching lines @@
 }
 
 std::wstring LocationBarViewMac::GetTitle() const {
   NOTIMPLEMENTED();
   return std::wstring();
 }
 
 void LocationBarViewMac::Revert() {
   NOTIMPLEMENTED();
 }