Mark WorkerTest.MultipleTabsQueuedSharedWorker as flaky

TBR=atwilson

BUG=69881
TEST=ui_tests
Review URL: http://codereview.chromium.org/6347003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71597 0039d316-1c4b-4281-b951-d872f2087c98

chrome/worker/worker_uitest.cc

@@ -629,7 +629,8 @@ TEST_F(WorkerTest, QueuedSharedWorkerShutdown) {
   ASSERT_TRUE(WaitForProcessCountToBe(1, max_workers_per_tab));
 }
 
-TEST_F(WorkerTest, MultipleTabsQueuedSharedWorker) {
+// Flaky, http://crbug.com/69881.
+TEST_F(WorkerTest, FLAKY_MultipleTabsQueuedSharedWorker) {
   // Tests to make sure that only one instance of queued shared workers are
   // started up even when those instances are on multiple tabs.
   int max_workers_per_tab = WorkerService::kMaxWorkersPerTabWhenSeparate;