Merge "Open access to reportClassLoaderChain as CorePlatformAPI" into rvc-dev am: 76c1d9351e am: b721c8bb71 am: 70545a11d8

Original change: https://googleplex-android-review.googlesource.com/c/platform/libcore/+/10861595

Change-Id: I2278d8b993dccdd81f872618995afbb896bd97f7