Cross Reference: /external/skqp/experimental/sksg/paint

`Name`	`Date`	`Size`
Up to higher level directory
`SkSGColor.cpp`	21-Aug-2018	`330`
`SkSGColor.h`	21-Aug-2018	`656`
`SkSGGradient.cpp`	21-Aug-2018	`2.1K`
`SkSGGradient.h`	21-Aug-2018	`2.6K`