[sheriff] Disable flaky overscroll test

Disable flaky test
ChromeRenderWidgetHostViewMacHistorySwiperTest.InnerScrollersOverscrollBehaviorPreventsNavigation

TBR=erikchen@chromium.org

Bug: 1070405
Change-Id: I9172489f113de25784c1ca7946a9b707ef797956
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2225499Reviewed-by: Nina Satragno <nsatragno@chromium.org>
Commit-Queue: Nina Satragno <nsatragno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#773796}

chrome/browser/renderer_host/chrome_render_widget_host_view_mac_history_swiper_browsertest.mm

@@ -798,8 +798,10 @@ IN_PROC_BROWSER_TEST_F(ChromeRenderWidgetHostViewMacHistorySwiperTest,
   ExpectUrlAndOffset(url1_, 0);
 }
 
-IN_PROC_BROWSER_TEST_F(ChromeRenderWidgetHostViewMacHistorySwiperTest,
-                       InnerScrollersOverscrollBehaviorPreventsNavigation) {
+// TODO(crbug.com/1070405): flaky.
+IN_PROC_BROWSER_TEST_F(
+    ChromeRenderWidgetHostViewMacHistorySwiperTest,
+    DISABLED_InnerScrollersOverscrollBehaviorPreventsNavigation) {
   if (!IsHistorySwipingSupported())
     return;