[Sheriff] Disable FindInPageTestCase/testAccessibilityOnFindInPage

Due to flakiness

TBR=stkhapugin@chromium.org

Bug: 1107877
Change-Id: I134760ea3b31c9e5e93319e3180a760de4c15c6b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2317882Reviewed-by: Roman Sorokin [CET] <rsorokin@chromium.org>
Commit-Queue: Roman Sorokin [CET] <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791775}

ios/chrome/browser/ui/find_bar/find_in_page_egtest.mm

@@ -160,7 +160,9 @@ const std::string kFindInPageResponse = "Find in page. Find in page.";
 }
 
 // Tests accessibility of the Find in Page screen.
-- (void)testAccessibilityOnFindInPage {
+//
+// Disabled due to https://crbug.com/1107877.
+- (void)DISABLED_testAccessibilityOnFindInPage {
   [self typeFindInPageText:@"find"];
   [self assertResultStringIsResult:1 outOfTotal:2];