Throw an exception in JNI::NewObject for abstract classes. Test: 863-serialization Bug: 421834866 Flag: EXEMPT bugfix (cherry picked from https://googleplex-android-review.googlesource.com/q/commit:a4826745b63bdab1db7536680e1c8e947a56f7be) (cherry picked from https://googleplex-android-review.googlesource.com/q/commit:c212d0a4d7aba8187ab03369a880e7b612927ea6) Merged-In: I4ccf22f85b4ae0325e9f8e29503149bbda533e86 Change-Id: I4ccf22f85b4ae0325e9f8e29503149bbda533e86