Merge "Add missing break in switch statement" into jb-mr1-dev

                    // We know there's no subsampling of any channels, so we

                    // only need to shrink by a half a pixel.

                    shrinkAmount = 0.5;

                    break;

                default:

                    // If we don't recognize the format, we must assume the

                    // worst case (that we care about), which is YUV420.