Serialize SkColorSpace into DeferredTextureImage

This fixes a memory leak that occurs when DeferredTextureImage is deallocated without being destroyed. It is intended to be stored in discarable memory and thus this has to be safe.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2184823010

Review-Url: https://codereview.chromium.org/2184823010
1 file changed