Remove m_keyFrameRulesMap in StyleResolver

Remove m_keyFrameRulesMap in StyleResolver

StyleResolver::m_keyFrameRulesMap is never used and can be deleted.

BUG=none
TEST=compile

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=185419

[kochi, 2014-11-13 08:59:26]

kochi@chromium.org changed reviewers:
+ hayato@chromium.org

[kochi, 2014-11-13 08:59:26]

PTAL

[hayato, 2014-11-13 10:03:03]

LGTM

[hayato, 2014-11-13 10:03:06]

The CQ bit was checked by hayato@chromium.org

[commit-bot: I haz the power, 2014-11-13 10:03:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/716403002/1

[commit-bot: I haz the power, 2014-11-13 12:11:21]

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

[commit-bot: I haz the power, 2014-11-13 12:11:23]

Try jobs failed on following builders:
  win_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/win_blink_rel/builds/36296)

[kochi, 2014-11-17 05:07:07]

The CQ bit was checked by kochi@chromium.org

[commit-bot: I haz the power, 2014-11-17 05:07:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/716403002/1

[commit-bot: I haz the power, 2014-11-17 05:51:25]

Committed patchset #1 (id:1) as 185419