Replace ART's core-platform-api stub with module-lib stubs

The stub should be identical now, and thus replacing it
should cause no behavior change.

It will help later remove the @CorePlatformApi usage in the
java sources.

Bug: 192645954
Bug: 192446466
Test: m droid
Merged-In: I22538a0f65669885852a2cf1994c6d3a5561e52f
Change-Id: I22538a0f65669885852a2cf1994c6d3a5561e52f
2 files changed