[Flaky] Disable FlingControllerTest.EarlyTouchpadFlingCancelationOnInertialGSUAckNotConsumed

The test should use better way to compare floating point numbers to handling below
case:
../../content/browser/renderer_host/input/fling_controller_unittest.cc:303: Failure
Expected: (last_sent_wheel_.delta_x) > (0.f), actual: -0.121721 vs 0

TBR=sahel@chromium.org,dtapuska@chromium.org

Bug: 836996, 875777
Change-Id: Ib9eab4988b1809a753068f7cc2da5815ee7780f1
Reviewed-on: https://chromium-review.googlesource.com/1182713Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Commit-Queue: Yoshifumi Inoue <yosin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584625}

content/browser/renderer_host/input/fling_controller_unittest.cc

@@ -282,8 +282,10 @@ TEST_F(FlingControllerTest,
   EXPECT_EQ(WebInputEvent::kGestureScrollEnd, last_sent_gesture_.GetType());
 }
 
+// TDOO(http://crbug.com/875777): We should do use better comparison method for
+// floating point numbers.
 TEST_F(FlingControllerTest,
-       EarlyTouchpadFlingCancelationOnInertialGSUAckNotConsumed) {
+       DISABLED_EarlyTouchpadFlingCancelationOnInertialGSUAckNotConsumed) {
   base::TimeTicks progress_time = base::TimeTicks::Now();
   SimulateFlingStart(blink::kWebGestureDeviceTouchpad, gfx::Vector2dF(1000, 0));
   EXPECT_TRUE(FlingInProgress());