EG test to test 'Open in New Tab' on download link.

Add EG test which opens download link in the new tab via context menu.
Test is almost identical copy of testContextMenuOpenInNewTab.

Bug: 920585
Change-Id: I2ba6ca164545fc3dce56980f9aa67e1493a6225f
Reviewed-on: https://chromium-review.googlesource.com/c/1405545
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Commit-Queue: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622198}
2 files changed