Bug 1540117 - Part 5: Fix browser_webconsole_warning_group_content_blocking.js too by ensuring that the test image does set a cookie. r=fix CLOSED TREE

Differential Revision: https://phabricator.services.mozilla.com//D43671

--HG--
extra : histedit_source : c0cb5631e5195fe73d19dc36813efc3bf6284f25

devtools/client/webconsole/test/browser/browser.ini

@@ -73,6 +73,7 @@ support-files =
   test-iframe-wrong-hud-iframe.html
   test-iframe-wrong-hud.html
   test-image.png
+  test-image.png^headers^
   test-ineffective-iframe-sandbox-warning-inner.html
   test-ineffective-iframe-sandbox-warning-nested1.html
   test-ineffective-iframe-sandbox-warning-nested2.html

devtools/client/webconsole/test/browser/browser_webconsole_warning_group_content_blocking.js

@@ -42,6 +42,16 @@ registerCleanupFunction(function() {
 pushPref("privacy.trackingprotection.enabled", true);
 pushPref("devtools.webconsole.groupWarningMessages", true);
 
+async function cleanUp() {
+  await new Promise(resolve => {
+    Services.clearData.deleteData(Ci.nsIClearDataService.CLEAR_ALL, value =>
+      resolve()
+    );
+  });
+}
+
+add_task(cleanUp);
+
 add_task(async function testContentBlockingMessage() {
   const { hud, tab, win } = await openNewWindowAndConsole(
     "http://tracking.example.org/" + TEST_FILE
@@ -155,6 +165,8 @@ add_task(async function testCookieBlockedByPermissionMessage() {
   Services.perms.removeFromPrincipal(p, "cookie");
 });
 
+add_task(cleanUp);
+
 /**
  * Test that storage access blocked messages are grouped by emitting 2 messages.
  *

devtools/client/webconsole/test/browser/test-image.png^headers^

@@ -0,0 +1 @@
+Set-Cookie: name=value