This change fixes the filtering of Gerrit Reviews. Prior to this change
authored Changes were duplicated in the list of Reviews.

Bug: NONE
Change-Id: If0dceb3dc24ed12f039a9549ec22b9b78c3d80dd
Reviewed-on: https://chromium-review.googlesource.com/1145381Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Jan Wilken Dörrie <jdoerrie@chromium.org>