Remove content area from GrTextureAdjuster.

Bug: skia:
Change-Id: I77854ee22303afe5787bf3094bca2db1a3dcf5ef
Reviewed-on: https://skia-review.googlesource.com/66149
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
10 files changed