[Android] Update 3pp package for robolectric.

The previous CL did not put the files in a lib/ subdirectory, and
it was also missing the .jar suffix for all the names.

Bug: 1255748
Change-Id: I653ae28f9f7b965c1b24b06a4864315a05f5dc06
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3221710
Auto-Submit: Tommy Nyquist <nyquist@chromium.org>
Reviewed-by: Mohamed Heikal <mheikal@chromium.org>
Reviewed-by: Haiyang Pan <hypan@google.com>
Reviewed-by: Ben joyce <bjoyce@chromium.org>
Commit-Queue: Ben joyce <bjoyce@chromium.org>
Cr-Commit-Position: refs/heads/main@{#931199}