Android: Update android studio docs.

Reflects the change from --full to --fast.

Bug: 620034
Change-Id: Id88f4f3e00cc1f6fcdc4878786cc342d8717537d
Reviewed-on: https://chromium-review.googlesource.com/1135530
Commit-Queue: agrieve <agrieve@chromium.org>
Reviewed-by: agrieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574828}
1 file changed