Deleting cookies by setting the expires attribute on them with an empty value...

chrome/browser/renderer_host/resource_message_filter.cc

Index: chrome/browser/renderer_host/resource_message_filter.cc
===================================================================
--- chrome/browser/renderer_host/resource_message_filter.cc	(revision 35707)
+++ chrome/browser/renderer_host/resource_message_filter.cc	(working copy)
@@ -538,12 +538,7 @@
 void ResourceMessageFilter::OnDeleteCookie(const GURL& url,
                                            const std::string& cookie_name) {
   URLRequestContext* context = GetRequestContextForURL(url);
-  net::CookieMonster* cookie_monster = context->cookie_store()->
-      GetCookieMonster();
-  if (!cookie_monster)
-    return;
-
-  cookie_monster->DeleteCookie(url, cookie_name);
+  context->cookie_store()->DeleteCookie(url, cookie_name);
 }
 
 #if defined(OS_WIN)  // This hack is Windows-specific.