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

chrome/browser/browser.cc

 // Copyright (c) 2006-2009 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/browser.h"
 
 #include "app/l10n_util.h"
 #include "base/command_line.h"
 #include "base/idle_timer.h"
 #include "base/logging.h"
@@ skipping 1568 matching lines @@
                             TabContents* new_contents,
                             int index,
                             bool user_gesture) {
   DCHECK(old_contents != new_contents);
 
   // If we have any update pending, do it now.
   if (!chrome_updater_factory_.empty() && old_contents)
     ProcessPendingUIUpdates();
 
   if (old_contents) {
-#if defined(OS_WIN)
     // Save what the user's currently typing, so it can be restored when we
     // switch back to this tab.
     window_->GetLocationBar()->SaveStateToContents(old_contents);
-#else
-    NOTIMPLEMENTED();
-#endif
   }
 
   // Propagate the profile to the location bar.
   UpdateToolbar(true);
 
   // Update stop/go state.
   UpdateStopGoState(new_contents->is_loading(), true);
 
   // Update commands to reflect current state.
   UpdateCommandsForTabState();
@@ skipping 1010 matching lines @@
 
   // We need to register the window position pref.
   std::wstring window_pref(prefs::kBrowserWindowPlacement);
   window_pref.append(L"_");
   window_pref.append(app_name);
   PrefService* prefs = g_browser_process->local_state();
   DCHECK(prefs);
 
   prefs->RegisterDictionaryPref(window_pref.c_str());
 }