Gave native File Browser file handlers higher priority than 3rd party handlers.

chrome/browser/chromeos/extensions/file_handler_util.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/chromeos/extensions/file_handler_util.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/json/json_writer.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
+#include "chrome/browser/chromeos/extensions/file_manager_util.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/extensions/file_browser_handler.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_security_policy.h"
@@ skipping 184 matching lines @@
       }
     }
   }
 
   const DictionaryValue* prefs_tasks =
       profile->GetPrefs()->GetDictionary(prefs::kLastUsedFileBrowserHandlers);
   for (ActionSet::const_iterator iter = common_tasks.begin();
        iter != common_tasks.end(); ++iter) {
     // Get timestamp of when this task was used last time.
     int last_used_timestamp = 0;
+
+    if ((*iter)->extension_id() == kFileBrowserDomain) {
+      // Give a little bump to the action from File Browser extenion
+      // to make sure it is the default on a fresh profile.
+      last_used_timestamp = 1;
+    }
     prefs_tasks->GetInteger(MakeTaskID((*iter)->extension_id(), (*iter)->id()),
                             &last_used_timestamp);
     URLPatternSet matching_patterns = GetAllMatchingPatterns(*iter, files_list);
     named_action_list->push_back(LastUsedHandler(last_used_timestamp, *iter,
                                                  matching_patterns));
   }
 
   SortLastUsedHandlerList(named_action_list);
   return true;
 }
@@ skipping 312 matching lines @@
   base::JSONWriter::Write(event_args.get(), false, &json_args);
   event_router->DispatchEventToExtension(
       extension_id_, std::string("fileBrowserHandler.onExecute"),
       json_args, profile_,
       GURL());
   Done(true);
 }
 
 } // namespace file_handler_util