Use extension-based file picker from CrOS for Aura builds.

chrome/browser/ui/browser.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/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // OS_WIN
@@ skipping 2312 matching lines @@
                              PrefService::UNSYNCABLE_PREF);
   prefs->RegisterBooleanPref(prefs::kImportHomepage,
                              true,
                              PrefService::UNSYNCABLE_PREF);
   prefs->RegisterBooleanPref(prefs::kImportSearchEngine,
                              true,
                              PrefService::UNSYNCABLE_PREF);
   prefs->RegisterBooleanPref(prefs::kImportSavedPasswords,
                              true,
                              PrefService::UNSYNCABLE_PREF);
+  // The map of timestamps of the last used file browser handlers.
+  prefs->RegisterDictionaryPref(prefs::kLastUsedFileBrowserHandlers,
+                                PrefService::UNSYNCABLE_PREF);
 
   // We need to register the type of these preferences in order to query
   // them even though they're only typically controlled via policy.
   prefs->RegisterBooleanPref(prefs::kDisable3DAPIs,
                              false,
                              PrefService::UNSYNCABLE_PREF);
   prefs->RegisterBooleanPref(prefs::kPluginsAllowOutdated,
                              false,
                              PrefService::UNSYNCABLE_PREF);
   prefs->RegisterBooleanPref(prefs::kPluginsAlwaysAuthorize,
@@ skipping 2928 matching lines @@
   } else if (is_type_tabbed()) {
     GlobalErrorService* service =
         GlobalErrorServiceFactory::GetForProfile(profile());
     GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
     if (error) {
       error->ShowBubbleView(this);
       did_show_bubble = true;
     }
   }
 }