Move StringToLowerASCII to base namespace

ui/gfx/render_text_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 "ui/gfx/render_text.h"
 
 #include <algorithm>
 
 #include "base/format_macros.h"
 #include "base/i18n/break_iterator.h"
@@ skipping 1327 matching lines @@
   render_text->SetText(UTF8ToUTF16(" "));
   EXPECT_EQ(font_list.GetHeight(), render_text->GetStringSize().height());
   EXPECT_EQ(font_list.GetBaseline(), render_text->GetBaseline());
 }
 #endif  // !defined(OS_MACOSX)
 
 TEST_F(RenderTextTest, StringSizeRespectsFontListMetrics) {
   // Check that Arial and Symbol have different font metrics.
   Font arial_font("Arial", 16);
   ASSERT_EQ("arial",
-            StringToLowerASCII(arial_font.GetActualFontNameForTesting()));
+            base::StringToLowerASCII(arial_font.GetActualFontNameForTesting()));
   Font symbol_font("Symbol", 16);
   ASSERT_EQ("symbol",
-            StringToLowerASCII(symbol_font.GetActualFontNameForTesting()));
+            base::StringToLowerASCII(
+                symbol_font.GetActualFontNameForTesting()));
   EXPECT_NE(arial_font.GetHeight(), symbol_font.GetHeight());
   EXPECT_NE(arial_font.GetBaseline(), symbol_font.GetBaseline());
   // "a" should be rendered with Arial, not with Symbol.
   const char* arial_font_text = "a";
   // "®" (registered trademark symbol) should be rendered with Symbol,
   // not with Arial.
   const char* symbol_font_text = "\xC2\xAE";
 
   Font smaller_font = arial_font;
   Font larger_font = symbol_font;
@@ skipping 923 matching lines @@
   EXPECT_EQ(Range(0, 0), run.CharRangeToGlyphRange(Range(4, 5)));
   EXPECT_EQ(Range(0, 0), run.GetGraphemeBounds(iter.get(), 4));
   Range chars;
   Range glyphs;
   run.GetClusterAt(4, &chars, &glyphs);
   EXPECT_EQ(Range(3, 8), chars);
   EXPECT_EQ(Range(0, 0), glyphs);
 }
 
 }  // namespace gfx