Disable ServiceWorkerMessagingTest.TabToWorker_StopWorkerDisconnects

This test is flaky.

Bug: 1069550
Change-Id: I45b2260a996ee7611b3d5fe250dc20d1e7170328
Tbr: lazyboy@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2143428Reviewed-by: Reilly Grant <reillyg@chromium.org>
Commit-Queue: Reilly Grant <reillyg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#757965}

chrome/browser/extensions/service_worker_messaging_apitest.cc

@@ -103,8 +103,9 @@ IN_PROC_BROWSER_TEST_F(ServiceWorkerMessagingTest, TabToWorker) {
 // Tests that a message port disconnects if the extension SW is forcefully
 // stopped.
 // Regression test for https://crbug.com/1033783.
+// Disabled due to flake: https://crbug.com/1069550
 IN_PROC_BROWSER_TEST_F(ServiceWorkerMessagingTest,
-                       TabToWorker_StopWorkerDisconnects) {
+                       DISABLED_TabToWorker_StopWorkerDisconnects) {
   ASSERT_TRUE(StartEmbeddedTestServer());
 
   TestExtensionDir test_dir;