Revert of Rewrite GrTextureMaker to disentangle bitmap case from base class and give GPU object a say in what…

Revert of Rewrite GrTextureMaker to disentangle bitmap case from base class and give GPU object a say in what… (patchset #4 id:60001 of https://codereview.chromium.org/1409163002/ )

Reason for revert:
breaking nanobench

Original issue's description:
> Rewrite GrTextureMaker to disentangle bitmap case from base class and give GPU object a say in what copying needs to be done.
> 
> Committed: https://skia.googlesource.com/skia/+/fcffaf22d697f06f903c3193308f9dc54a959f79

TBR=reed@google.com,bsalomon@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://skia.googlesource.com/skia/+/91957941ce2fe9457babe7f83514e4599089d411

[egdaniel, 2015-10-16 20:58:56]

Created Revert of Rewrite GrTextureMaker to disentangle bitmap case from base
class and give GPU object a say in what…