Disable flaky test GestureFlingControllerNotCancelledBySmallTimeDelta

TBR=tdresser@chromium.org

Bug: 836996
Change-Id: Ieb41ef895cdc2ea3ca26b47c4f3a2e9694bacf78
Reviewed-on: https://chromium-review.googlesource.com/1029110
Commit-Queue: Patrick Noland <pnoland@chromium.org>
Reviewed-by: Patrick Noland <pnoland@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553818}

content/browser/renderer_host/input/fling_controller_unittest.cc

@@ -348,7 +348,8 @@ TEST_F(FlingControllerTest, GestureFlingCancelsFiltered) {
   EXPECT_TRUE(last_fling_cancel_filtered_);
 }
 
-TEST_F(FlingControllerTest, GestureFlingNotCancelledBySmallTimeDelta) {
+// Flaky. https://crbug.com/836996.
+TEST_F(FlingControllerTest, DISABLED_GestureFlingNotCancelledBySmallTimeDelta) {
   base::TimeTicks progress_time = base::TimeTicks::Now();
   SimulateFlingStart(blink::kWebGestureDeviceTouchscreen,
                      gfx::Vector2dF(1000, 0));