Move the number conversions from string_util to a new file....

net/websockets/websocket_handshake.cc

Index: net/websockets/websocket_handshake.cc
===================================================================
--- net/websockets/websocket_handshake.cc	(revision 54340)
+++ net/websockets/websocket_handshake.cc	(working copy)
@@ -7,9 +7,11 @@
 #include <algorithm>
 #include <vector>
 
+#include "base/logging.h"
 #include "base/md5.h"
 #include "base/rand_util.h"
 #include "base/ref_counted.h"
+#include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_util.h"
@@ -134,7 +136,7 @@
         (secure &&
          port != kSecureWebSocketPort && port != url_parse::PORT_UNSPECIFIED)) {
       host += ":";
-      host += IntToString(port);
+      host += base::IntToString(port);
     }
   }
   return host;