16e185c908
I accidentally did a signed comparison of the size_t values passed in for three of the _chk functions. Changing them to unsigned compares. Add three new tests to verify this failure is fixed. Bug: 10691831 Merge from internal master. (cherry-picked from 883ef2499c2ff76605f73b1240f719ca6282e554) Change-Id: Id9a96b549435f5d9b61dc132cf1082e0e30889f5