Move StringToUpperASCII and LowerCaseEqualsASCII to the base namespace

content/browser/accessibility/browser_accessibility.cc

Index: content/browser/accessibility/browser_accessibility.cc
diff --git a/content/browser/accessibility/browser_accessibility.cc b/content/browser/accessibility/browser_accessibility.cc
index fe71fef965aa95dfdd32a16d0c22d738e9430e99..babbd74e3afae8df8d4a4f1a6cb255364e3e1e94 100644
--- a/content/browser/accessibility/browser_accessibility.cc
+++ b/content/browser/accessibility/browser_accessibility.cc
@@ -596,7 +596,7 @@ bool BrowserAccessibility::GetHtmlAttribute(
     const char* html_attr, std::string* value) const {
   for (size_t i = 0; i < GetHtmlAttributes().size(); ++i) {
     const std::string& attr = GetHtmlAttributes()[i].first;
-    if (LowerCaseEqualsASCII(attr, html_attr)) {
+    if (base::LowerCaseEqualsASCII(attr, html_attr)) {
       *value = GetHtmlAttributes()[i].second;
       return true;
     }