Enable Test ObjectElementsViaFile

The test always passes locally however it fails when the feature
MimeHandlerViewInCrossProcessFrame is enabled. This is most likey due
to an already known issue with 'loadstop'.
Enabling the test and for now returning early when the feature is
enabled.

Bug: 964364, 840063
Change-Id: I5ff1cb29109e0994767b5dcb6c8d0af5b49158b1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1630521Reviewed-by: Avi Drissman <avi@chromium.org>
Commit-Queue: Ehsan Karamad <ekaramad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#666390}

chrome/browser/download/save_page_browsertest.cc

@@ -1221,9 +1221,12 @@ IN_PROC_BROWSER_TEST_P(SavePageOriginalVsSavedComparisonTest,
 }
 
 // Tests that saving a page from file: URI works.
-// TODO(https://crbug.com/840063): Deflake and reenable.
 IN_PROC_BROWSER_TEST_P(SavePageOriginalVsSavedComparisonTest,
-                       DISABLED_ObjectElementsViaFile) {
+                       ObjectElementsViaFile) {
+  // TODO(lukasza): https://crbug.com/964364: Re-enable the test.
+  if (content::MimeHandlerViewMode::UsesCrossProcessFrame())
+    return;
+
   base::FilePath test_data_dir;
   ASSERT_TRUE(base::PathService::Get(chrome::DIR_TEST_DATA, &test_data_dir));
   GURL url(net::FilePathToFileURL(