Disable one breadcrumb test for files-ng

With the flag enabled, and upcoming change the DOM structure of the
breadcrumb, this test can't work in files-ng.

Bug: 1035691
Change-Id: I3a78f7d82bc5f117fd3dfeab6b925c7284e41b0d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2086379Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746665}

ui/file_manager/integration_tests/file_manager/breadcrumbs.js

@@ -121,6 +121,12 @@
     const appId = await setupAndWaitUntilReady(
         RootPath.DOWNLOADS, nestedFolderTestEntries, []);
 
+    // files-ng bail out: it does not have breadcrumb tooltips.
+    const body = await remoteCall.waitForElement(appId, 'body');
+    if (body.attributes['class'] === 'files-ng') {
+      return;
+    }
+
     // Navigate to deepest folder.
     const breadcrumb = '/My files/Downloads/' +
         nestedFolderTestEntries.map(e => e.nameText).join('/');