Remove Skia comment API overrides

Remove Skia comment API overrides

Blink is no longer emitting comment API calls, and the Skia interface is
scheduled for removal.

R=reed@google.com,caseq@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=197127

[reed1, 2015-05-21 21:13:06]

lgtm

[f(malita), 2015-05-22 14:29:28]

The CQ bit was checked by fmalita@chromium.org

[commit-bot: I haz the power, 2015-05-22 14:29:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1151933002/1

[commit-bot: I haz the power, 2015-05-22 14:36:50]

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

[commit-bot: I haz the power, 2015-05-22 14:36:52]

Try jobs failed on following builders:
  blink_presubmit on tryserver.blink (JOB_FAILED,
http://build.chromium.org/p/tryserver.blink/builders/blink_presubmit/builds/3...)

[f(malita), 2015-05-22 14:46:37]

fmalita@chromium.org changed reviewers:
+ pfeldman@chromium.org

[f(malita), 2015-06-15 16:33:55]

The CQ bit was checked by fmalita@chromium.org

[f(malita), 2015-06-15 16:33:55]

The patchset sent to the CQ was uploaded after l-g-t-m from reed@google.com
Link to the patchset: https://codereview.chromium.org/1151933002/#ps20001
(title: "rebased")

[commit-bot: I haz the power, 2015-06-15 16:34:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1151933002/20001

[commit-bot: I haz the power, 2015-06-15 17:35:06]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=197127