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

content/renderer/clipboard_utils.cc

Index: content/renderer/clipboard_utils.cc
diff --git a/content/renderer/clipboard_utils.cc b/content/renderer/clipboard_utils.cc
index 28c04c99a7efd5efffaec07832cadba093da558d..eb88332af4a32488cc551ca0554388475feb7067 100644
--- a/content/renderer/clipboard_utils.cc
+++ b/content/renderer/clipboard_utils.cc
@@ -17,7 +17,7 @@ std::string URLToMarkup(const blink::WebURL& url,
   markup.append(url.spec());
   markup.append("\">");
   // TODO(darin): HTML escape this
-  markup.append(net::EscapeForHTML(UTF16ToUTF8(title)));
+  markup.append(net::EscapeForHTML(base::UTF16ToUTF8(title)));
   markup.append("</a>");
   return markup;
 }
@@ -29,7 +29,7 @@ std::string URLToImageMarkup(const blink::WebURL& url,
   markup.append("\"");
   if (!title.isEmpty()) {
     markup.append(" alt=\"");
-    markup.append(net::EscapeForHTML(UTF16ToUTF8(title)));
+    markup.append(net::EscapeForHTML(base::UTF16ToUTF8(title)));
     markup.append("\"");
   }
   markup.append("/>");