Use zip to replicate argb values out to 16 bits BUG=186 TEST=Shade Review URL: https://webrtc-codereview.appspot.com/986004
Use zip to replicate argb values out to 16 bits
BUG=186
TEST=Shade
Review URL: https://webrtc-codereview.appspot.com/986004
flykickbird/libyuv,flykickbird/libyuv,flykickbird/libyuv