tree ab0f95f9966040cc88a90d3dbda09f4e76c68605
parent 856b7bd42c5dc8922d79a64af432ecc929bd740c
author Yifan Hong <elsk@google.com> 1541458410 -0800
committer Yifan Hong <elsk@google.com> 1541624602 -0800

VintfObject::checkCompatibility loads XMLs from the device correctly.

Previously:
- When getFrameworkCompatibilityMatrix() is called, the Target FCM version
is always loaded from the device, but not from the update package.
This can potentially break a vendor-only OTA that updates the Target FCM
version, because the FCM from device isn't loaded with the correct Target FCM
version.

In this CL, I refactored checkCompatibility logic so that the
VintfObjectAfterUpdate object applies the updated VINTF metadata as an
overlay on top of the original VintfObject.

Test: vintf_object_test
Test: manual OTA
Bug: 118635062
Change-Id: Ib04ba09d4a07c8e5d1e4ac64194e956b37e1f76f