Add explicit base namespace to string16 users.

chrome/common/extensions/api/extension_action/script_badge_handler.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/common/extensions/api/extension_action/script_badge_handler.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension_constants.h"
@@ skipping 12 matching lines @@
 ScriptBadgeHandler::ScriptBadgeHandler() {
 }
 
 ScriptBadgeHandler::~ScriptBadgeHandler() {
 }
 
 const std::vector<std::string> ScriptBadgeHandler::PrerequisiteKeys() const {
   return SingleKey(keys::kIcons);
 }
 
-bool ScriptBadgeHandler::Parse(Extension* extension, string16* error) {
+bool ScriptBadgeHandler::Parse(Extension* extension, base::string16* error) {
   scoped_ptr<ActionInfo> action_info(new ActionInfo);
 
   // Provide a default script badge if one isn't declared in the manifest.
   if (!extension->manifest()->HasKey(keys::kScriptBadge)) {
     SetActionInfoDefaults(extension, action_info.get());
     ActionInfo::SetScriptBadgeInfo(extension, action_info.release());
     return true;
   }
 
   // So as to not confuse developers if they specify a script badge section
@@ skipping 57 matching lines @@
           extension_misc::kScriptBadgeIconSizes[i], path);
     }
   }
 }
 
 const std::vector<std::string> ScriptBadgeHandler::Keys() const {
   return SingleKey(keys::kScriptBadge);
 }
 
 }  // namespace extensions