Disable flaky CancelationSignalTest.Cancel on iOS and Mac.

Recent flake:
http://build.chromium.org/p/chromium.mac/builders/iOS%20Simulator%20%28dbg%29/builds/15075

Flakiness dashboard:
http://chromium-build-logs.appspot.com/gtest_query?gtest_query=CancelationSignalTest.Cancel

BUG=340360
TEST=none
R=erg@chromium.org
TBR=rlarocque@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/148613010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@248569 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 7 insertions, 1 deletions

diff --git a/sync/internal_api/public/base/cancelation_signal_unittest.cc b/sync/internal_api/public/base/cancelation_signal_unittest.cc
index 613e756..ab75918 100644
--- a/sync/internal_api/public/base/cancelation_signal_unittest.cc
+++ b/sync/internal_api/public/base/cancelation_signal_unittest.cc
@@ -155,12 +155,18 @@ TEST_F(CancelationSignalTest, CancelEarly) {
   EXPECT_TRUE(VerifyTaskNotStarted());
 }
 
+// This test is flaky on iOS and Mac; see http://crbug.com/340360
+#if defined(OS_IOS) || defined(OS_MACOSX)
+#define MAYBE_Cancel DISABLED_Cancel
+#else
+#define MAYBE_Cancel Cancel
+#endif
 // Send the cancelation signal after the request to start the task has been
 // posted.  This is racy.  The signal to stop may arrive before the signal to
 // run the task.  If that happens, we end up with another instance of the
 // CancelEarly test defined earlier.  If the signal requesting a stop arrives
 // after the task has been started, it should end up stopping the task.
-TEST_F(CancelationSignalTest, Cancel) {
+TEST_F(CancelationSignalTest, MAYBE_Cancel) {
   StartBlockingTask();
   CancelBlocking();
   EXPECT_TRUE(VerifyTaskDone());