rebase

TBR=
NOTRY=True
BUG=skia:

Review URL: https://codereview.chromium.org/818163002
add picture to c api

BUG=skia:
TBR=

Review URL: https://codereview.chromium.org/818153002
ignoring imageblur2 on galaxy

NOTRY=True
TBR=
BUG=skia:

Review URL: https://codereview.chromium.org/816893003