Prefix string16 with base:: in ui/.

ui/views/corewm/tooltip_aura_unittest.cc

 // Copyright 2013 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/corewm/tooltip_aura.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/text_elider.h"
 #include "ui/views/test/views_test_base.h"
 
 namespace views {
 namespace corewm {
 
 typedef ViewsTestBase TooltipAuraTest;
 
 // TODO(sky): clean this up.
 gfx::Font GetDefaultFont() {
   return ui::ResourceBundle::GetSharedInstance().GetFont(
       ui::ResourceBundle::BaseFont);
 }
 
 TEST_F(TooltipAuraTest, TrimTooltipToFitTests) {
   const int max_width = 4000;
-  string16 tooltip;
+  base::string16 tooltip;
   int width, line_count, expect_lines;
   int max_pixel_width = 400;  // copied from constants in tooltip_controller.cc
   int max_lines = 10;  // copied from constants in tooltip_controller.cc
   gfx::Font font = GetDefaultFont();
   size_t tooltip_len;
 
   // Error in computed size vs. expected size should not be greater than the
   // size of the longest word.
   int error_in_pixel_width = font.GetStringWidth(ASCIIToUTF16("tooltip"));
 
@@ skipping 72 matching lines @@
   width = line_count = -1;
   tooltip = ASCIIToUTF16("Small  Tool  t\tip");
   TooltipAura::TrimTooltipToFit(max_width, &tooltip, &width, &line_count);
   EXPECT_EQ(font.GetStringWidth(ASCIIToUTF16("Small  Tool  t\tip")), width);
   EXPECT_EQ(1, line_count);
   EXPECT_EQ(ASCIIToUTF16("Small  Tool  t\tip"), tooltip);
 }
 
 }  // namespace corewm
 }  // namespace views