Revert of implement readPixels and writePixels natively, w/o using the (deprecated) (https://codereview.chromium.org/199733016/)

Reason for revert:
Android bots segfaulting in tests.

Original issue's description:
> implement readPixels and writePixels natively, w/o using the (deprecated)
> SkCanvas::Config8888 enum.
>
> Revert "Revert "hide Config8888 entirely". Broke a bunch of builds."
>
> This reverts commit 763277ba157fef0f651004bb98a189e9f1ac730b.
>
> Needs chrome to remove the READPIXELS guard from skia's .gyp
>
> Committed: https://code.google.com/p/skia/source/detail?r=13931

R=reed@google.com
TBR=reed@google.com
NOTREECHECKS=true
NOTRY=true

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/209233004

git-svn-id: http://skia.googlecode.com/svn/trunk@13932 2bbb7eff-a529-9590-31e7-b0007b416f81
13 files changed