[Sheriff] Disable TestIFrameHistorySwiping

Bug: 1160922
TBR: rsesek
Change-Id: I6e1e2868b8dfd3dd2079cf69ea4688b30d5ae2b0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2600039Reviewed-by: Frank Liberato <liberato@chromium.org>
Reviewed-by: Erik Chen <erikchen@chromium.org>
Commit-Queue: Frank Liberato <liberato@chromium.org>
Cr-Commit-Position: refs/heads/master@{#838697}

chrome/browser/renderer_host/chrome_render_widget_host_view_mac_history_swiper_browsertest.mm

@@ -744,7 +744,7 @@ IN_PROC_BROWSER_TEST_F(ChromeRenderWidgetHostViewMacHistorySwiperTest,
 // Initial movements are vertical, and scroll the iframe. Subsequent movements
 // are horizontal, and should not trigger history swiping.
 IN_PROC_BROWSER_TEST_F(ChromeRenderWidgetHostViewMacHistorySwiperTest,
-                       TestIframeHistorySwiping) {
+                       DISABLED_TestIframeHistorySwiping) {
   if (!IsHistorySwipingSupported())
     return;