Small cleanup to extension function registration to avoid scattered definitions.

chrome/browser/extensions/execute_code_in_tab_function.cc

 // 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.
 
 #include "chrome/browser/extensions/execute_code_in_tab_function.h"
 
 #include "base/string_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/extensions/extension_tabs_module.h"
 #include "chrome/browser/extensions/extension_tabs_module_constants.h"
@@ skipping 106 matching lines @@
   TabContents* contents = NULL;
   Browser* browser = NULL;
   if (!ExtensionTabUtil::GetTabById(execute_tab_id_, profile(), &browser, NULL,
                                     &contents, NULL) && contents && browser) {
     SendResponse(false);
     return;
   }
 
   bool is_js_code = true;
   std::string function_name = name();
-  if (function_name == keys::kInsertCSSFunction) {
+  if (function_name == TabsInsertCSSFunction::function_name()) {
     is_js_code = false;
-  } else if (function_name != keys::kExecuteScriptFunction) {
+  } else if (function_name != TabsExecuteScriptFunction::function_name()) {
     DCHECK(false);
   }
   registrar_.Add(this, NotificationType::TAB_CODE_EXECUTED,
                  NotificationService::AllSources());
   AddRef();  // balanced in Observe()
   contents->ExecuteCode(request_id(), extension_id(), is_js_code,
                         code_string);
 }
 
 void ExecuteCodeInTabFunction::Observe(NotificationType type,
                                        const NotificationSource& source,
                                        const NotificationDetails& details) {
   std::pair<int, bool>* result_details =
       Details<std::pair<int, bool> >(details).ptr();
   if (result_details->first == request_id()) {
     SendResponse(result_details->second);
     Release();  // balanced in Execute()
   }
 }