Revert "Add sizeInBytes to GrResource, make GrRenderTarget aware of its pixel config (r1951)"

Temporarily revert this change in order to roll other changes into Chrome.

TBR=bsalomon@google.com

Review URL: http://codereview.appspot.com/4807051

git-svn-id: http://skia.googlecode.com/svn/trunk@1958 2bbb7eff-a529-9590-31e7-b0007b416f81
23 files changed