blink_perf/is-input-pending test suppression

Skipping these tests:
blink_perf.events/is-input-pending-all-events.html
blink_perf.events/is-input-pending-default-events.html

To stop failures on performance_test_suite.

Bug: chromium:1069468
Change-Id: I8bc86a0271357a9497643c24ed902f5a23e5833e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2144355Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Behdad Bakhshinategh <behdadb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#757895}

tools/perf/expectations.config

@@ -72,6 +72,8 @@ crbug.com/986423 [ android-nexus-5x android-webview ] blink_perf.events/EventsDi
 crbug.com/986423 [ android-nexus-5x android-webview ] blink_perf.events/EventsDispatchingInDeeplyNestedV1ShadowTrees.html [ Skip ]
 crbug.com/986423 [ android-nexus-5x android-webview ] blink_perf.events/EventsDispatchingInV0ShadowTrees.html [ Skip ]
 crbug.com/986423 [ android-nexus-5x android-webview ] blink_perf.events/EventsDispatchingInV1ShadowTrees.html [ Skip ]
+crbug.com/1069468 blink_perf.events/is-input-pending-all-events.html [ Skip ]
+crbug.com/1069468 blink_perf.events/is-input-pending-default-events.html [ Skip ]
 
 # Benchmark: blink_perf.layout
 crbug.com/551950 [ android-low-end ] blink_perf.layout/* [ Skip ]