store the hash for blocks that are predictively skipped
store the hash for blocks that are predictively skipped

Change-Id: I334281aee38be03a383ae6899970b4200ec43c01

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom