Add libatspi2 to install-build-deps.sh

This became necessary to build Chrome after [1] when building without the
sysroot.

[1] https://chromium.googlesource.com/chromium/src/+/297928530fc400a897f62fa98ccf4a5485990f22

BUG=879147
TBR=dpranke

Change-Id: Iff2d59b247cd764f404f0beeaf232cc8dc8188aa
Reviewed-on: https://chromium-review.googlesource.com/1214699Reviewed-by: Michael Moss <mmoss@chromium.org>
Commit-Queue: Thomas Anderson <thomasanderson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590093}

build/install-build-deps.sh

@@ -135,6 +135,7 @@ dev_list="\
   gperf
   libappindicator3-dev
   libasound2-dev
+  libatspi2.0-dev
   libbrlapi-dev
   libbz2-dev
   libcairo2-dev
@@ -206,6 +207,7 @@ common_lib_list="\
   libappindicator3-1
   libasound2
   libatk1.0-0
+  libatspi2.0-0
   libc6
   libcairo2
   libcap2