Propagate return values from compare() up to main() so we can return 0 if all tests succeed, -1 if any tests fail. (This will allow the automated test infrastructure to run GM.) Because we haven't implemented it on some architectures, not creating a GPU context is not considered a failure.
Propagate return values from compare() up to main() so we can return 0 if all
tests succeed, -1 if any tests fail. (This will allow the automated test
infrastructure to run GM.) Because we haven't implemented it on some
architectures, not creating a GPU context is not considered a failure.



git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@1196 2bbb7eff-a529-9590-31e7-b0007b416f81

Hankuo/color-emoji.skia,MatChung/color-emoji.skia,Hankuo/color-emoji.skia,Frankie-666/color-emoji.skia,MatChung/color-emoji.skia,hbwhlklive/color-emoji.skia,Frankie-666/color-emoji.skia,hbwhlklive/color-emoji.skia,hbwhlklive/color-emoji.skia,Hankuo/color-emoji.skia,Hankuo/color-emoji.skia,MatChung/color-emoji.skia,Hankuo/color-emoji.skia,Frankie-666/color-emoji.skia,Hankuo/color-emoji.skia,hbwhlklive/color-emoji.skia,Frankie-666/color-emoji.skia,MatChung/color-emoji.skia,MatChung/color-emoji.skia,hbwhlklive/color-emoji.skia,MatChung/color-emoji.skia,hbwhlklive/color-emoji.skia,Frankie-666/color-emoji.skia,Frankie-666/color-emoji.skia