Add SkCanvas::writePixels that takes info+pixels directly

add corresponding methods to device (w/ diff name to avoid colliding with exising virtuals)

BUG=skia:
R=bsalomon@google.com, robertphillips@google.com, junov@google.com, junov@chromium.org

Author: reed@google.com

Review URL: https://codereview.chromium.org/180113010

git-svn-id: http://skia.googlecode.com/svn/trunk@13697 2bbb7eff-a529-9590-31e7-b0007b416f81
23 files changed