tree c75fb681e851c98c9d15c61c5145ec0235d2a6ea
parent 776c34430b28cd36cf819f8d072565c88472c6d3
author Jonathan Amsterdam <jba@google.com> 1510859419 -0500
committer Jonathan Amsterdam <jba@google.com> 1511150212 +0000

firestore: remove Exists(false) precondition

BREAKING CHANGE: Exists(false) is no longer supported; replace Exists(true) with Exists.

There is never a reason to specify a precondition that requires a
document to not exist. Remove the ability to do so, and change Exists
from a func(bool) to a variable.

Change-Id: I8bca39f982f33479f5a22ece2317c23c8bbc479a
Reviewed-on: https://code-review.googlesource.com/19690
Reviewed-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Michael Darakananda <pongad@google.com>