Move LowerCaseEqualsASCII to base namespace

ui/gfx/render_text_harfbuzz.cc

 // Copyright 2014 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_harfbuzz.h"
 
 #include <limits>
 #include <set>
 
 #include "base/i18n/bidi_line_iterator.h"
@@ skipping 1303 matching lines @@
         GetFallbackFontFamilies(uniscribe_family);
     fallback_families.insert(fallback_families.end(),
         uniscribe_fallbacks.begin(), uniscribe_fallbacks.end());
   }
 
   // Add Segoe UI and its associated linked fonts to the fallback font list to
   // ensure that the fallback list covers the basic cases.
   // http://crbug.com/467459. On some Windows configurations the default font
   // could be a raster font like System, which would not give us a reasonable
   // fallback font list.
-  if (!LowerCaseEqualsASCII(primary_family, "segoe ui") &&
-      !LowerCaseEqualsASCII(uniscribe_family, "segoe ui")) {
+  if (!base::LowerCaseEqualsASCII(primary_family, "segoe ui") &&
+      !base::LowerCaseEqualsASCII(uniscribe_family, "segoe ui")) {
     std::vector<std::string> default_fallback_families =
         GetFallbackFontFamilies("Segoe UI");
     fallback_families.insert(fallback_families.end(),
         default_fallback_families.begin(), default_fallback_families.end());
   }
 #endif
 
   // Use a set to track the fallback fonts and avoid duplicate entries.
   std::set<std::string, CaseInsensitiveCompare> fallback_fonts;
 
@@ skipping 143 matching lines @@
   DCHECK(!update_layout_run_list_);
   DCHECK(!update_display_run_list_);
   return text_elided() ? display_run_list_.get() : &layout_run_list_;
 }
 
 const internal::TextRunList* RenderTextHarfBuzz::GetRunList() const {
   return const_cast<RenderTextHarfBuzz*>(this)->GetRunList();
 }
 
 }  // namespace gfx