Disable flaky FallbackCoordinator tests.

TBR=javierrobles@chromium.org

Bug: 1115321, 1115282
Change-Id: I2684b189dc648fd738e9f6bb21acb7da46809587
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2352255Reviewed-by: calamity <calamity@chromium.org>
Commit-Queue: calamity <calamity@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797549}

ios/chrome/browser/ui/autofill/manual_fill/fallback_coordinator_egtest.mm

@@ -451,7 +451,8 @@ BOOL WaitForKeyboardToAppear() {
 }
 
 // Tests that the manual fallback view is present in incognito.
-- (void)testIncognitoManualFallbackMenu {
+// Disabled due to flakiness. See crbug.com/1115321.
+- (void)DISABLED_testIncognitoManualFallbackMenu {
   // Add the profile to use for verification.
   [AutofillAppInterface saveExampleProfile];
 
@@ -560,7 +561,8 @@ BOOL WaitForKeyboardToAppear() {
 }
 
 // Tests that the manual fallback view is not duplicated after incognito.
-- (void)testReturningFromIncognitoDoesNotDuplicatesManualFallbackMenu {
+// Disabled due to flakiness. See crbug.com/1115282.
+- (void)DISABLED_testReturningFromIncognitoDoesNotDuplicatesManualFallbackMenu {
   // Add the profile to use for verification.
   [AutofillAppInterface saveExampleProfile];