tree bbf9ec5ae182cd89665f088af41303c907758151
parent d8525007e1885e17804cc8de082e46b531b3901c
author Josh Gao <jmgao@google.com> 1524861107 -0700
committer Josh Gao <jmgao@google.com> 1525125132 -0700

crash_dump: defuse our signal handlers earlier.

We have a LOG(FATAL) that can potentially happen before we turn off
SIGABRT. Move the signal handler defusing to the very start of main.

Bug: http://b/77920633
Test: treehugger
Change-Id: I7a2f2a0f2bed16e54467388044eca254102aa6a0
(cherry picked from commit 38ac45df1738496d5581b89845e48daeab7f0219)