Adding some more escaping method....

net/base/escape.h

Index: net/base/escape.h
===================================================================
--- net/base/escape.h	(revision 36299)
+++ net/base/escape.h	(working copy)
@@ -92,6 +92,8 @@
 // conversions need to take place, it only unescapes.
 std::string UnescapeURLComponent(const std::string& escaped_text,
                                  UnescapeRule::Type rules);
+string16 UnescapeURLComponent(const string16& escaped_text,
+                              UnescapeRule::Type rules);
 
 // Unescapes the given substring as a URL, and then tries to interpret the
 // result as being encoded as UTF-8. If the result is convertable into UTF-8, it
@@ -106,6 +108,10 @@
                                            UnescapeRule::Type rules,
                                            size_t* offset_for_adjustment);
 
+// Unescape the following ampersand character codes from |text|:
+// < > & " '
+string16 UnescapeForHTML(const string16& text);
+
 // Deprecated ------------------------------------------------------------------
 
 // Escapes characters in text suitable for use as a query parameter value.