Make pictures in multipicturedraw GM fit in 0,0..W,H range

Make pictures in multipicturedraw GM fit in 0,0..W,H range

Having the picture contents not actually reside in the 0,0..W,H range wrecks havoc with the layer hoisting. The hoisting works correctly but since the picture don't fulfill their contract the results look incorrect.

This CL just translates the picture's contents to the right so they are within the picture bound.

Committed: https://skia.googlesource.com/skia/+/aa0c837667306babf7dc284c1b8da77127b993a1

[robertphillips, 2014-09-26 15:28:32]

robertphillips@google.com changed reviewers:
+ egdaniel@google.com

[egdaniel, 2014-09-26 16:57:00]

lgtm

[robertphillips, 2014-09-29 11:59:14]

The CQ bit was checked by robertphillips@google.com

[commit-bot: I haz the power, 2014-09-29 11:59:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/594363003/1

[commit-bot: I haz the power, 2014-09-29 12:07:41]

Committed patchset #1 (id:1) as aa0c837667306babf7dc284c1b8da77127b993a1