Attempt 2 at landing this....

chrome/browser/automation/url_request_automation_job.h

Index: chrome/browser/automation/url_request_automation_job.h
===================================================================
--- chrome/browser/automation/url_request_automation_job.h	(revision 35771)
+++ chrome/browser/automation/url_request_automation_job.h	(working copy)
@@ -6,6 +6,7 @@
 #ifndef CHROME_BROWSER_AUTOMATION_URL_REQUEST_AUTOMATION_JOB_H_
 #define CHROME_BROWSER_AUTOMATION_URL_REQUEST_AUTOMATION_JOB_H_
 
+#include <vector>
 #include "chrome/common/ref_counted_util.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/url_request.h"
@@ -51,6 +52,12 @@
     return request_id_;
   }
 
+  // Returns true if the cookie passed in exists in the list of cookies
+  // parsed from the HTTP response header.
+  static bool IsCookiePresentInCookieHeader(
+      const std::string& cookie_name,
+      const std::vector<std::string>& header_cookies);
+
  protected:
   // Protected URLRequestJob override.
   virtual bool ReadRawData(net::IOBuffer* buf, int buf_size, int* bytes_read);