Disable some more flaky FlingControllerTest tests.

Disable the ControllerHandlesTouchscreenGestureFling and
ControllerSendsWheelEndWhenTouchpadFlingIsOver tests, which appear to
have timing-dependent flakiness.

Bug: 836996
Change-Id: I42b7b23489b4cf2dbb2fdacf89c77bd102ac03a8
Reviewed-on: https://chromium-review.googlesource.com/1166328Reviewed-by: Sahel Sharify <sahel@chromium.org>
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581671}

content/browser/renderer_host/input/fling_controller_unittest.cc

@@ -195,7 +195,8 @@ TEST_F(FlingControllerTest, DISABLED_ControllerHandlesTouchpadGestureFling) {
   EXPECT_EQ(0.f, last_sent_wheel_.delta_y);
 }
 
-TEST_F(FlingControllerTest, ControllerHandlesTouchscreenGestureFling) {
+// TODO(https://crbug.com/836996): Timing-dependent flakes on some platforms.
+TEST_F(FlingControllerTest, DISABLED_ControllerHandlesTouchscreenGestureFling) {
   base::TimeTicks progress_time = base::TimeTicks::Now();
   SimulateFlingStart(blink::kWebGestureDeviceTouchscreen,
                      gfx::Vector2dF(1000, 0));
@@ -221,7 +222,9 @@ TEST_F(FlingControllerTest, ControllerHandlesTouchscreenGestureFling) {
   EXPECT_EQ(WebInputEvent::kGestureScrollEnd, last_sent_gesture_.GetType());
 }
 
-TEST_F(FlingControllerTest, ControllerSendsWheelEndWhenTouchpadFlingIsOver) {
+// TODO(https://crbug.com/836996): Timing-dependent flakes on some platforms.
+TEST_F(FlingControllerTest,
+       DISABLED_ControllerSendsWheelEndWhenTouchpadFlingIsOver) {
   base::TimeTicks progress_time = base::TimeTicks::Now();
   SimulateFlingStart(blink::kWebGestureDeviceTouchpad, gfx::Vector2dF(100, 0));
   EXPECT_TRUE(FlingInProgress());