Remove caching of textures in GrAHardwareBufferImageGenerator.

We will rely on the UniqueKey system controlled up the stack by
SkImage_Lazy to avoid making redudent GrTextureProxies.

Bug: skia:
Change-Id: I64ee38ecd8651cc7d5e062b6d47a1871b752772a
Reviewed-on: https://skia-review.googlesource.com/152384
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
2 files changed