Merge changes I3ae20595,I24aaf62e,I763a5d30,I07270c9a,Ib91dfdd6, ...

* changes:
  gn2bp: Generate a copy of 'cronet_jni_registration' for java
  gn2bp: Fix args formatting for java_cpp_enum.py script
  gn2bp: Move 'sanitize_version_filepath' to base class
  gn2bp: Create `java_genrule` from java actions
  gn2bp: Convert java_actions to `java_group`
  gn2bp: Remove redundant checks