tree 373172a931bef7f97cada1904f073e03182857aa
parent 478befe3cc9a846d3897b23db0e8b893a8e2858e
author Tamas Kenez <tamaskenez@google.com> 1508838513 +0200
committer Tamas Kenez <tamaskenez@google.com> 1508838513 +0200

Automatically (not explicitly) control Proguard-related default options

This CL re-applies 30ebba3 which has been reverted in 12bcf4f because of
these failures: http://storage.googleapis.com/r8-test-results/c0ff09e6-bac6-4ded-b776-b5b15342d83b/test/index.html

Certain options (minification/shrinking/keeprules/attrs) have different
defaults with and without a Proguard config file.
Originally it has been decided automatically, based on the presence of
Proguard options.

This has been changed to explicit decision in 5e8f1ba because of complications
from handling a ProguardConsumer. It has been suggested to restore the automatic
choice but the first attempt 30ebba3 broke some tests.

This CL restores the original, automatic choice.

Bug:
Change-Id: I7e0e7b96354e376829cd548b9a76e1efcdfbcf63