Make stencils be attachable to render targets created via SkSurface::MakeFromBackendTextureAsRenderTarget
This is a regression from "Refactor to separate backend object lifecycle
and GpuResource budget decision".
GrGLRenderTarget::CreateWrapped creates only render targets that wrap
the FBO.
GrGLRenderTargetTexture::CreateWrapped creates render targets that
wrap the texture.
Use the latter as the implementation for
SkSurface::MakeFromBackendTextureAsRenderTarget.
BUG=608238
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=
1924183003
Committed: https://skia.googlesource.com/skia/+/
fe635fd76bbc375d527d1884af23cc617ca364ee
Review-Url: https://codereview.chromium.org/
1924183003