Revert of Change call-sites now that SkCanvas is not ref-counted

Revert of Change call-sites now that SkCanvas is not ref-counted (patchset #10 id:180001 of https://codereview.chromium.org/2476113002/ )

Reason for revert:
Believe this caused a crash 

https://bugs.chromium.org/p/chromium/issues/detail?id=666154

Original issue's description:
> Change call-sites now that SkCanvas is not ref-counted
> 
> BUG=skia:5971
> CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel
> 
> TBR=dtrainor@chromium.org
> 
> Committed: https://crrev.com/60c148ef13aed978fcaf5dae9e242f99618f2164
> Cr-Commit-Position: refs/heads/master@{#432481}

TBR=esprehn@chromium.org,blundell@chromium.org,ccameron@chromium.org,danakj@chromium.org,fmalita@chromium.org,khushalsagar@chromium.org,raymes@chromium.org,sky@chromium.org,tobiasjs@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=skia:5971

[reed1, 2016-11-17 14:47:57]

The CQ bit was checked by reed@google.com

[reed1, 2016-11-17 14:47:57]

Created Revert of Change call-sites now that SkCanvas is not ref-counted

[commit-bot: I haz the power, 2016-11-17 14:48:12]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-17 14:50:37]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-11-17 14:50:39]

Try jobs failed on following builders:
  ios-device on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-device/builds...)
  ios-simulator on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)
  mac_chromium_rel_ng on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)