[ios] Disable QRScannerViewController flaky test

TBR=olivierrobin@chromium.org

Bug: 1036094
Change-Id: I2f29c4f60b3cde9ee444ea2b5b79c82fbf4a54c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1976139Reviewed-by: Chris Lu <thegreenfrog@chromium.org>
Cr-Commit-Position: refs/heads/master@{#726683}

ios/chrome/browser/ui/qr_scanner/qr_scanner_view_controller_egtest.mm

@@ -645,6 +645,12 @@ void TapKeyboardReturnKeyInOmniboxWithText(std::string text) {
 // Tests that an error dialog is dismissed if the camera becomes available.
 // TODO(crbug.com/1019211): Re-enable test on iOS12.
 - (void)testDialogDismissedIfCameraBecomesAvailable {
+#if defined(CHROME_EARL_GREY_1)
+  // TODO(crbug.com/1036094): EG1 Test flaky on iOS 12.
+  if (!base::ios::IsRunningOnIOS13OrLater()) {
+    EARL_GREY_TEST_DISABLED(@"EG1 flaky on iOS 12.");
+  }
+#endif
   id cameraControllerMock =
       [QRScannerAppInterface cameraControllerMockWithAuthorizationStatus:
                                  AVAuthorizationStatusAuthorized];