Adding Priority field to cookies.

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

Index: chrome/browser/extensions/api/cookies/cookies_api.cc
diff --git a/chrome/browser/extensions/api/cookies/cookies_api.cc b/chrome/browser/extensions/api/cookies/cookies_api.cc
index c35b830497a05db03a96af7a2d21cc4a0c908149..d8c2bafceb8c1e5ba05fec0ae7a8b5d43be1dcee 100644
--- a/chrome/browser/extensions/api/cookies/cookies_api.cc
+++ b/chrome/browser/extensions/api/cookies/cookies_api.cc
@@ -29,6 +29,7 @@
 #include "content/public/browser/notification_service.h"
 #include "extensions/common/error_utils.h"
 #include "net/cookies/canonical_cookie.h"
+#include "net/cookies/cookie_constants.h"
 #include "net/cookies/cookie_monster.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
@@ -390,6 +391,9 @@ void CookiesSetFunction::SetCookieOnIOThread() {
                                          : false,
       parsed_args_->details.http_only.get() ? *parsed_args_->details.http_only
                                             : false,
+      parsed_args_->details.priority.get() ?
+          net::StringToCookiePriority(*parsed_args_->details.priority) :
+          net::PRIORITY_DEFAULT,
       base::Bind(&CookiesSetFunction::PullCookie, this));
 }