Revert 102113 - Aura: Use extension-based file picker from CrOS for pure-views builds.

chrome/browser/ui/browser.cc

Index: chrome/browser/ui/browser.cc
===================================================================
--- chrome/browser/ui/browser.cc	(revision 102115)
+++ chrome/browser/ui/browser.cc	(working copy)
@@ -2330,9 +2330,6 @@
   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.