Move StringToUpperASCII and LowerCaseEqualsASCII to the base namespace

content/child/npapi/plugin_url_fetcher.cc

Index: content/child/npapi/plugin_url_fetcher.cc
diff --git a/content/child/npapi/plugin_url_fetcher.cc b/content/child/npapi/plugin_url_fetcher.cc
index 48c685e353f335d3beb80d1160b89d4368b1bec8..cd3d83bb178493f1d9544d68fabd7e47d99b41b6 100644
--- a/content/child/npapi/plugin_url_fetcher.cc
+++ b/content/child/npapi/plugin_url_fetcher.cc
@@ -131,7 +131,7 @@ PluginURLFetcher::PluginURLFetcher(PluginStreamUrl* plugin_stream,
       if (!request_info.headers.empty())
         request_info.headers += "\r\n";
       request_info.headers += names[i] + ": " + values[i];
-      if (LowerCaseEqualsASCII(names[i], "content-type"))
+      if (base::LowerCaseEqualsASCII(names[i], "content-type"))
         content_type_found = true;
     }