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

chrome/common/extensions/api/url_handlers/url_handlers_parser.cc

Index: chrome/common/extensions/api/url_handlers/url_handlers_parser.cc
diff --git a/chrome/common/extensions/api/url_handlers/url_handlers_parser.cc b/chrome/common/extensions/api/url_handlers/url_handlers_parser.cc
index aa1cd3b913fea6b9bd05fff4902d3d1e21723290..898547f7909c802cbe294aeacae61a4c9c97354b 100644
--- a/chrome/common/extensions/api/url_handlers/url_handlers_parser.cc
+++ b/chrome/common/extensions/api/url_handlers/url_handlers_parser.cc
@@ -98,7 +98,7 @@ bool ParseUrlHandler(const std::string& handler_id,
   handler.id = handler_id;
 
   if (!handler_info.GetString(mkeys::kUrlHandlerTitle, &handler.title)) {
-    *error = ASCIIToUTF16(merrors::kInvalidURLHandlerTitle);
+    *error = base::ASCIIToUTF16(merrors::kInvalidURLHandlerTitle);
     return false;
   }
 
@@ -137,7 +137,7 @@ bool UrlHandlersParser::Parse(Extension* extension, base::string16* error) {
   const base::DictionaryValue* all_handlers = NULL;
   if (!extension->manifest()->GetDictionary(
         mkeys::kUrlHandlers, &all_handlers)) {
-    *error = ASCIIToUTF16(merrors::kInvalidURLHandlers);
+    *error = base::ASCIIToUTF16(merrors::kInvalidURLHandlers);
     return false;
   }
 
@@ -148,7 +148,7 @@ bool UrlHandlersParser::Parse(Extension* extension, base::string16* error) {
     // A URL handler entry is a title and a list of URL patterns to handle.
     const base::DictionaryValue* handler = NULL;
     if (!iter.value().GetAsDictionary(&handler)) {
-      *error = ASCIIToUTF16(merrors::kInvalidURLHandlerPatternElement);
+      *error = base::ASCIIToUTF16(merrors::kInvalidURLHandlerPatternElement);
       return false;
     }