GitLab

Remove the message loop wait that changes timing of tests on valgrind. None of the tests are checking for delayed state changes, so the waits are unnecessary.

Remove the filter to test failures on the bots.

TEST=ShelfViewTest.AppListButtonTouchFeedback, ShelfViewTest.AppListButtonTouchFeedbackCancellation, SystemTrayTest.TrayPopupItemContainerTouchFeedback, SystemTrayTest.TrayPopupItemContainerTouchFeedbackCancellation, TrayDetailsViewTest.HoverHighlightViewTouchFeedback, TrayDetailsViewTest.HoverHighlightViewTouchFeedbackCancellation, TrayDetailsViewTest.TrayPopupHeaderButtonTouchFeedback, TrayDetailsViewTest.TrayPopupHeaderButtonTouchFeedbackCancellation, WebNotificationTrayTest.TouchFeedback, WebNotificationTrayTest.TouchFeedbackCancellation
BUG=421888

Review URL: https://codereview.chromium.org/968873005

Cr-Commit-Position: refs/heads/master@{#319881}