Add explicit base namespace to string16 users.

chrome/common/extensions/api/input_ime/input_components_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/input_ime/input_components_handler.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 29 matching lines @@
   return info ? &info->input_components : NULL;
 }
 
 InputComponentsHandler::InputComponentsHandler() {
 }
 
 InputComponentsHandler::~InputComponentsHandler() {
 }
 
 bool InputComponentsHandler::Parse(Extension* extension,
-                                   string16* error) {
+                                   base::string16* error) {
   scoped_ptr<InputComponents> info(new InputComponents);
   const base::ListValue* list_value = NULL;
   if (!extension->manifest()->GetList(keys::kInputComponents, &list_value)) {
     *error = ASCIIToUTF16(errors::kInvalidInputComponents);
     return false;
   }
   for (size_t i = 0; i < list_value->GetSize(); ++i) {
     const base::DictionaryValue* module_value = NULL;
     std::string name_str;
     InputComponentType type;
@@ skipping 156 matching lines @@
 const std::vector<std::string>
 InputComponentsHandler::PrerequisiteKeys() const {
   return SingleKey(keys::kOptionsPage);
 }
 
 const std::vector<std::string> InputComponentsHandler::Keys() const {
   return SingleKey(keys::kInputComponents);
 }
 
 }  // namespace extensions