Use a direct include of strings headers in ui/, part 2.

ui/surface/accelerated_surface_transformer_win_unittest.cc

 // Copyright (c) 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 <d3d9.h>
 #include <random>
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/hash.h"
 #include "base/scoped_native_library.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "base/time.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/windows_version.h"
 #include "media/base/simd/convert_rgb_to_yuv.h"
 #include "media/base/yuv_convert.h"
 #include "skia/ext/image_operations.h"
 #include "testing/gtest/include/gtest/gtest-param-test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ skipping 863 matching lines @@
     result.push_back(base::win::GetVersion());
   }
   return result;
 }
 
 }  // namespace
 
 INSTANTIATE_TEST_CASE_P(VistaAndUp,
                         AcceleratedSurfaceTransformerTest,
                         ::testing::ValuesIn(WindowsVersionIfVistaOrBetter()));