Reland: Fix ProcessUtilTest.GetTerminationStatusCrash on Android L+

Originally landed in http://crrev.com/1241333002
Reverted in http://crrev.com/1247023002 for breaking the MIPS Android builder,
which was fixed in LSS, which was rolled in http://crrev.com/1286073002

Original commit message:
> Fix ProcessUtilTest.GetTerminationStatusCrash on Android L+
>
> On Android L+, signal and sigaction symbols are provided by libsigchain
> that override the system's versions. There is a bug in these functions
> where they essentially ignore requests to install SIG_DFL. This causes
> ProcessUtilTest.GetTerminationStatusCrash to fail (as
> CrashingChildProcess goes into infinite loop instead of crashing).
>
> Workaround this issue by explicitly performing a syscall to
> __NR_rt_sigaction to install SIG_DFL on Android, as breakpad does
> (see https://breakpad.appspot.com/1804002/).
>
> BUG=512255
> TEST=ProcessUtilTest.GetTerminationStatusCrash
>
> Committed: https://crrev.com/31510fe3e2d3b1f3123f391db52372b2506c46ca
> Cr-Commit-Position: refs/heads/master@{#339584}

BUG=512255
TEST=ProcessUtilTest.GetTerminationStatusCrash

Review URL: https://codereview.chromium.org/1285083002

Cr-Commit-Position: refs/heads/master@{#344026}

1 files changed, 1 insertions, 0 deletions

diff --git a/base/DEPS b/base/DEPS
index c632e35..6d91c8d 100644
--- a/base/DEPS
+++ b/base/DEPS
@@ -4,6 +4,7 @@ include_rules = [
   "+third_party/apple_apsl",
   "+third_party/libevent",
   "+third_party/dmg_fp",
+  "+third_party/lss",
   "+third_party/mach_override",
   "+third_party/modp_b64",
   "+third_party/tcmalloc",