Add checkstyle dependency to install-build-deps-android.sh

Add checkstyle to deps to unblock adding java checkstyle presubmit step.

BUG=320711
NOTRY=true

Review URL: https://codereview.chromium.org/80383008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236781 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236781