Adding Priority field to cookies.

chrome/browser/extensions/api/cookies/cookies_helpers.cc

Index: chrome/browser/extensions/api/cookies/cookies_helpers.cc
diff --git a/chrome/browser/extensions/api/cookies/cookies_helpers.cc b/chrome/browser/extensions/api/cookies/cookies_helpers.cc
index c61e7294f104b479105a9cb572ac9ada34e14dd3..f1272c834baeff0c137812b41ae37f65916a3389 100644
--- a/chrome/browser/extensions/api/cookies/cookies_helpers.cc
+++ b/chrome/browser/extensions/api/cookies/cookies_helpers.cc
@@ -25,6 +25,7 @@
 #include "content/public/browser/web_contents.h"
 #include "googleurl/src/gurl.h"
 #include "net/cookies/canonical_cookie.h"
+#include "net/cookies/cookie_constants.h"
 #include "net/cookies/cookie_util.h"
 
 using extensions::api::cookies::Cookie;
@@ -84,6 +85,7 @@ scoped_ptr<Cookie> CreateCookie(
         new double(canonical_cookie.ExpiryDate().ToDoubleT()));
   }
   cookie->store_id = store_id;
+  cookie->priority = net::CookiePriorityToString(canonical_cookie.Priority());
 
   return cookie.Pass();
 }