Prefix string16 with base:: in ui/.

ui/views/controls/table/test_table_model.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 "ui/views/controls/table/test_table_model.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/models/table_model_observer.h"
 #include "ui/gfx/image/image_skia.h"
 
 TestTableModel::TestTableModel(int row_count)
     : row_count_(row_count),
       observer_(NULL) {
 }
 
 TestTableModel::~TestTableModel() {
 }
 
 int TestTableModel::RowCount() {
   return row_count_;
 }
 
-string16 TestTableModel::GetText(int row, int column_id) {
+base::string16 TestTableModel::GetText(int row, int column_id) {
   return ASCIIToUTF16(base::IntToString(row) + "x" +
                       base::IntToString(column_id));
 }
 
 gfx::ImageSkia TestTableModel::GetIcon(int row) {
   SkBitmap bitmap;
   bitmap.setConfig(SkBitmap::kARGB_8888_Config, 16, 16);
   return gfx::ImageSkia::CreateFrom1xBitmap(bitmap);
 }
 
 void TestTableModel::SetObserver(ui::TableModelObserver* observer) {
   observer_ = observer;
 }