Bug: http://b/26987366 This code was accidentally casting a uchar4 to a single integer, which the latest llvm-rs-cc will flag as an error. The comparison was also incorrectly using a single integer comparison, instead of looking at all 4 uchar vector components. (cherry picked from commit 74be0c9b4329bb79ed46f2532022995429ffdfe8) Change-Id: Ic3727e234ffc87571ccacab19b2a4efb27ac0f20