commit a61a79ba201de9faf8ead2271c7ebcf4a852f47c
author Yabin Cui <yabinc@google.com> Mon Mar 21 17:46:21 2016 -0700
committer Yabin Cui <yabinc@google.com> Wed Mar 30 11:13:40 2016 -0700
tree 081c52c0b7f30a04c49b30cc2966f21254d0bb0e
parent 8f6dd1cc0224a604670d182c54bb83bb8025c1de

base: Avoid compilation error when compiled with -Wdangling-else.

As logging macros uses `if xxx else yyy` style, it is reported as an
error when DCHECK() is compiled with -Wdangling-else option. Because
after preprocess, DCHECK(x) becomes:
if (EnableDChecks)
  if (x)
    ;
  else
    LogMessage(FATAL) << yyy;

This CL avoids compilation error by replacing `if xxx else yyy`
with `xxx && yyy` or `!(xxx) || yyy`.

Bug: 26962895

Change-Id: Ib0bf242cc04a238ec31a1ab66b53fc8a5b5ed28f
(cherry picked from commit 2527628edae5651cb28e72b2c98f24e72dcdb384)