Add EscapeURL to the ASCII escape methods....

net/base/escape.h

Index: net/base/escape.h
===================================================================
--- net/base/escape.h	(revision 27534)
+++ net/base/escape.h	(working copy)
@@ -11,10 +11,15 @@
 
 // Escaping --------------------------------------------------------------------
 
-// Escape a file or url path.  This includes:
+// Escape a file.  This includes:
 // non-printable, non-7bit, and (including space)  "#%:<>?[\]^`{|}
 std::string EscapePath(const std::string& path);
 
+// Escape an url.  This includes:
+// non-printable, non-7bit, and (including space)  ?>=<;+'&%$#"![\]^`{|}
+// Space is escaped as + and other special characters as %XX (hex).
+std::string EscapeUrl(const std::string& path);
+
 // Escape all non-ASCII input.
 std::string EscapeNonASCII(const std::string& input);