Add CSS Animations performance tests

Add CSS Animations performance tests

This adds several performance tests for CSS Animations
initiated in various ways.

BUG=421733
Committed: https://crrev.com/4ba7ea704c5285b13a9481d51d636eed785abab3
Cr-Commit-Position: refs/heads/master@{#302641}

[alancutter (OOO until 2018), 2014-10-20 00:54:34]

alancutter@chromium.org changed reviewers:
+ dtu@chromium.org, tonyg@chromium.org

[alancutter (OOO until 2018), 2014-10-20 00:54:34]

Nexus 5 trybot run status: https://codereview.chromium.org/666723003/

[alancutter (OOO until 2018), 2014-10-23 00:12:03]

tonyg/dtu: Poke.

[dtu, 2014-11-03 22:46:43]

The CQ bit was checked by dtu@chromium.org

[dtu, 2014-11-03 22:46:44]

lgtm

[commit-bot: I haz the power, 2014-11-03 22:48:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/665833002/20001

[commit-bot: I haz the power, 2014-11-03 22:53:11]

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

[commit-bot: I haz the power, 2014-11-03 22:53:13]

Try jobs failed on following builders:
  win_gpu on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu/builds/82076)
  android_chromium_gn_compile_dbg on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  android_clang_dbg_recipe on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_clang_d...)
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)
  linux_chromium_asan_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_compile_dbg_32 on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_gn_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  ios_dbg_simulator on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  ios_rel_device on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device/bu...)
  ios_rel_device_ninja on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)
  mac_chromium_rel_ng on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)
  win8_chromium_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_rel...)
  win_chromium_compile_dbg on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_comp...)
  win_chromium_rel_ng on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)
  win_chromium_x64_rel_ng on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_x64_...)

[alancutter (OOO until 2018), 2014-11-04 18:04:12]

The CQ bit was checked by alancutter@chromium.org

[commit-bot: I haz the power, 2014-11-04 18:05:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/665833002/40001

[commit-bot: I haz the power, 2014-11-04 19:36:12]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2014-11-04 19:36:52]

Patchset 3 (id:??) landed as
https://crrev.com/4ba7ea704c5285b13a9481d51d636eed785abab3
Cr-Commit-Position: refs/heads/master@{#302641}