getDataStream() returns non-const ptr now

Change-Id: I6d1e811622cda61575464df8e4036b388a4ab706
(cherry picked from commit 1031dba9e205a80de5011931b52c628881f62372)
drop useless const_cast

Change-Id: I8a14faf56303b986c3e6c8e9bec53210ae86fc87
(cherry picked from commit 9533611f410dd36950c69a45fb6abe7e8760b281)
drop useless const_cast

Change-Id: Ie5e6f519a511931b383b6131a4a188abb3396946
(cherry picked from commit d3ddcbaeef9648cff78069b8ed443d7d3d611546)
do not disable complete test, just the one file

Change-Id: I1acccba8c2ef44d76c13eadb97d03119f08baa1d
(cherry picked from commit 7b91c6aaf9e0ef09ba31dee564dcee4def545549)