Suppress two more flaky webdriver_test_suite tests.

Two tests appear to have started becoming flak(ier) after
r710862.

TBR=aboxhall@chromium.org

Bug: 10200183
Change-Id: I075bee4409114a46db3833f5c2cc5fef0ff72e77
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1892292Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711104}

third_party/blink/web_tests/WebDriverExpectations

@@ -69,6 +69,8 @@ crbug.com/977228 [ Linux ] external/wpt/webdriver/tests/element_click/scroll_int
 crbug.com/977228 [ Linux ] external/wpt/webdriver/tests/element_click/scroll_into_view.py>>test_partially_visible_does_not_scroll[8] [ Failure Pass ]
 crbug.com/977228 [ Linux ] external/wpt/webdriver/tests/element_click/scroll_into_view.py>>test_partially_visible_does_not_scroll[9] [ Failure Pass ]
 crbug.com/977228 [ Linux ] external/wpt/webdriver/tests/element_click/scroll_into_view.py>>test_scroll_into_view [ Failure Pass ]
+crbug.com/1020018 [ Linux ] external/wpt/webdriver/tests/get_active_element/get.py>>test_sucess_input [ Failure ]
+crbug.com/1020018 [ Linux ] external/wpt/webdriver/tests/get_active_element/get.py>>test_sucess_input_non_interactable [ Failure ]
 
 # ====== New tests from wpt-importer added here ======
 crbug.com/626703 [ Linux ] external/wpt/webdriver/tests/interface.html [ Failure ]