[Android] Add mb_config entries for chromium.linux and tryserver.chromium.android.
[Android] Add mb_config entries for chromium.linux and tryserver.chromium.android.

BUG=576993

Review URL: https://codereview.chromium.org/1774233002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#380056}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk