Added an observer for 'pref::kDefaultCharset' change I forgot to add in rXXXX...

chrome/browser/net/chrome_url_request_context.h

Index: chrome/browser/net/chrome_url_request_context.h
===================================================================
--- chrome/browser/net/chrome_url_request_context.h	(revision 20790)
+++ chrome/browser/net/chrome_url_request_context.h	(working copy)
@@ -91,6 +91,9 @@
   // Callback for when the cookie policy changes.
   void OnCookiePolicyChange(net::CookiePolicy::Type type);
 
+  // Callback for when the default charset changes.
+  void OnDefaultCharsetChange(const std::string& default_charset);
+
   // Callback for when new extensions are loaded.
   void OnNewExtensions(ExtensionPaths* new_paths);