[GTK][WPE] http/tests/contentextensions/block-cookies-basic.html is flaky

• Component: WebKitGTK
• Status: NEW ---

[Lauro Moura]

Started flakiness between r249708 and r249813

Sample diff:

@@ -1,4 +1,4 @@
 This image resource sets a cookie. But based on the content rules, setting cookie should be blocked.
-document.cookie should be empty, and its value is ''
+document.cookie should be empty, and its value is 'cookieSetAsFirstParty=1'

[Lauro Moura]

The same happens to /http/tests/contentextensions/block-cookies-send.html starking flakiness in the same range.

--- /home/slave/webkitgtk/gtk-linux-64-release-tests/build/layout-test-results/http/tests/contentextensions/block-cookies-send-expected.txt
+++ /home/slave/webkitgtk/gtk-linux-64-release-tests/build/layout-test-results/http/tests/contentextensions/block-cookies-send-actual.txt
@@ -1,6 +1,6 @@
 This test loads a resource that sets a cookie, then verifies that the cookie is not sent out when it should be blocked.
-After the image, document.cookie is 'foo=awesomevalue'
-After the iframe, document.cookie is 'foo=awesomevalue'
+After the image, document.cookie is 'cookieSetAsFirstParty=1; foo=awesomevalue'
+After the iframe, document.cookie is 'cookieSetAsFirstParty=1; foo=awesomevalue'

[Lauro Moura]

The same is happening to WPE.

Both tests started flakiness in r249622.

[r249607-r249616]             NOERROR
[r249620-r249621]             NOERROR
r249622                       TEXT (Expected: PASS)
r249624                       NOERROR