Merge "CEC : Add validity check methods for some common operands" am: 75ec2dae7d am: f21e52e13c am: eac0392beb

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1458064

Change-Id: I25308f1fd464e55b7d1f977ff59890c14183dc62