Move a bunch of windows stuff from ui/base/win to ui/gfx/win

ui/base/text/utf16_indexing_unittest.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 "testing/gtest/include/gtest/gtest.h"
-#include "ui/base/text/utf16_indexing.h"
-
-namespace ui {
-
-TEST(UTF16IndexingTest, IndexOffsetConversions) {
-  // Valid surrogate pair surrounded by unpaired surrogates
-  const char16 foo[] = {0xDC00, 0xD800, 0xD800, 0xDFFF, 0xDFFF, 0xDBFF, 0};
-  const string16 s(foo);
-  const size_t the_invalid_index = 3;
-  for (size_t i = 0; i <= s.length(); ++i)
-    EXPECT_EQ(i != the_invalid_index, IsValidCodePointIndex(s, i));
-  for (size_t i = 0; i <= s.length(); ++i) {
-    for (size_t j = i; j <= s.length(); ++j) {
-      ptrdiff_t offset = static_cast<ptrdiff_t>(j - i);
-      if (i <= the_invalid_index && j > the_invalid_index)
-        --offset;
-      EXPECT_EQ(offset, UTF16IndexToOffset(s, i, j));
-      EXPECT_EQ(-offset, UTF16IndexToOffset(s, j, i));
-      size_t adjusted_j = (j == the_invalid_index) ? j + 1 : j;
-      EXPECT_EQ(adjusted_j, UTF16OffsetToIndex(s, i, offset));
-      size_t adjusted_i = (i == the_invalid_index) ? i + 1 : i;
-      EXPECT_EQ(adjusted_i, UTF16OffsetToIndex(s, j, -offset));
-    }
-  }
-}
-
-}  // namespace ui