Add Android implementation of navigator.getInstalledRelatedApps.

Based on a CL by dhnishi:
https://codereview.chromium.org/1756793004/

BUG=587623
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_site_isolation

Review-Url: https://codereview.chromium.org/2706403014
Cr-Commit-Position: refs/heads/master@{#458632}
10 files changed