Move StringToLowerASCII to base namespace

ui/gfx/font_list_unittest.cc

Index: ui/gfx/font_list_unittest.cc
diff --git a/ui/gfx/font_list_unittest.cc b/ui/gfx/font_list_unittest.cc
index b96de46318b696304888859e8c435af3b769cf57..fc5f8392069f52c12be3c12bd508291e4c7771ff 100644
--- a/ui/gfx/font_list_unittest.cc
+++ b/ui/gfx/font_list_unittest.cc
@@ -259,7 +259,8 @@ TEST(FontListTest, Fonts_DeriveWithSizeDelta) {
 TEST(FontListTest, Fonts_GetHeight_GetBaseline) {
   // If a font list has only one font, the height and baseline must be the same.
   Font font1("Arial", 16);
-  ASSERT_EQ("arial", StringToLowerASCII(font1.GetActualFontNameForTesting()));
+  ASSERT_EQ("arial",
+            base::StringToLowerASCII(font1.GetActualFontNameForTesting()));
   FontList font_list1("Arial, 16px");
   EXPECT_EQ(font1.GetHeight(), font_list1.GetHeight());
   EXPECT_EQ(font1.GetBaseline(), font_list1.GetBaseline());
@@ -267,7 +268,8 @@ TEST(FontListTest, Fonts_GetHeight_GetBaseline) {
   // If there are two different fonts, the font list returns the max value
   // for ascent and descent.
   Font font2("Symbol", 16);
-  ASSERT_EQ("symbol", StringToLowerASCII(font2.GetActualFontNameForTesting()));
+  ASSERT_EQ("symbol",
+            base::StringToLowerASCII(font2.GetActualFontNameForTesting()));
   EXPECT_NE(font1.GetBaseline(), font2.GetBaseline());
   EXPECT_NE(font1.GetHeight() - font1.GetBaseline(),
             font2.GetHeight() - font2.GetBaseline());