Ensure android_manifest_dep is always used in place of deps

Main motivation is to be able to write .build_config files quickly, so
that they can be used for generating build.gradle files for Android
Studio without first needing to build a bunch of native libraries.

BUG=620034

Review-Url: https://codereview.chromium.org/2088743003
Cr-Commit-Position: refs/heads/master@{#401520}
10 files changed