Disable DragWindowFromShelfControllerTest.SplitViewDragIndicatorsWindowDraggingStates

See details in:
https://analysis.chromium.org/p/chromium/flake-portal/flakes/occurrences?key=ag9zfmZpbmRpdC1mb3ItbWVybwsSBUZsYWtlImRjaHJvbWl1bUBhc2hfdW5pdHRlc3RzQERyYWdXaW5kb3dGcm9tU2hlbGZDb250cm9sbGVyVGVzdC5TcGxpdFZpZXdEcmFnSW5kaWNhdG9yc1dpbmRvd0RyYWdnaW5nU3RhdGVzDA

TBR=sky@chromium.org

Bug: 1022320
Change-Id: Ifabbbefaf11dbdfb1a9e5010d2013db52e80cac7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1904034Reviewed-by: Hongchan Choi <hongchan@chromium.org>
Commit-Queue: Hongchan Choi <hongchan@chromium.org>
Auto-Submit: Hongchan Choi <hongchan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713523}

ash/home_screen/drag_window_from_shelf_controller_unittest.cc

@@ -448,8 +448,9 @@ TEST_F(DragWindowFromShelfControllerTest, HideOverviewDuringDragging) {
 }
 
 // Check the split view drag indicators window dragging states.
+// Flaky on ChromeOS. https://crbug.com/1022320
 TEST_F(DragWindowFromShelfControllerTest,
-       SplitViewDragIndicatorsWindowDraggingStates) {
+       DISABLED_SplitViewDragIndicatorsWindowDraggingStates) {
   UpdateDisplay("400x400");
   const gfx::Rect shelf_bounds =
       Shelf::ForWindow(Shell::GetPrimaryRootWindow())->GetIdealBounds();