expand gtest cpu extension filter
expand gtest cpu extension filter

Look for OPT_ because this style is used to manually shard the intrapred
test and it's speed variant.

Change-Id: Ic294148e76a1d152e65a4df0c024280fe93ab6c6

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