Merge changes I1470e1fa,I52250144,I03b12ae6,Id08cb64c

* changes:
  gn2bp: remove hardcoded jni_registration denylist
  gn2bp: add javacflag to skip GEN_JNI stub generation
  gn2bp: use Android libgtest_prod_headers
  gn2bp: depend on :current_android_jar for JNI generation