Update uses of UTF conversions in chrome/common to use the base:: namespace.

chrome/common/net/url_util.cc

Index: chrome/common/net/url_util.cc
diff --git a/chrome/common/net/url_util.cc b/chrome/common/net/url_util.cc
index 3015a1737e68043b411b85f7dcd1fd64e4f6f3d3..0228379dc29c49dcc09cd806a38175db49e8914b 100644
--- a/chrome/common/net/url_util.cc
+++ b/chrome/common/net/url_util.cc
@@ -22,7 +22,7 @@ void WriteURLToClipboard(const GURL& url,
   // Unescaping path and query is not a good idea because other applications
   // may not encode non-ASCII characters in UTF-8.  See crbug.com/2820.
   base::string16 text = url.SchemeIs(content::kMailToScheme) ?
-      ASCIIToUTF16(url.path()) :
+      base::ASCIIToUTF16(url.path()) :
       net::FormatUrl(url, languages, net::kFormatUrlOmitNothing,
                      net::UnescapeRule::NONE, NULL, NULL, NULL);