Add rasterize_and_record_micro.fast_path_gpu_rasterization.key_silk_cases benchmark

Add rasterize_and_record_micro.fast_path_gpu_rasterization.key_silk_cases benchmark

Same as rasterize_and_record_micro.fast_path.key_silk_cases but with forced GPU
rasterization flags added (taken from smoothness.gpu_rasterization.*).

This benchmark will eventually replace rasterize_and_record_micro.fast_path.key_silk_cases,
but we need to stage that change to not break the buildbots (see bug).

BUG=367678
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266796

[Dominik Grewe, 2014-04-28 10:48:31]

Changed the name slightly from the bug to be more consistent with the
smoothness.fast_path_gpu_rasterization.* benchmarks.

PTAL.

[Sami, 2014-04-28 11:08:49]

lgtm, thanks cleaning up the existing flags.

[tonyg, 2014-04-28 14:07:00]

lgtm

[Dominik Grewe, 2014-04-28 14:18:18]

The CQ bit was checked by dominikg@chromium.org

[commit-bot: I haz the power, 2014-04-28 14:18:46]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/dominikg@chromium.org/256043005/50001

[commit-bot: I haz the power, 2014-04-28 15:01:22]

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

[commit-bot: I haz the power, 2014-04-28 15:01:22]

Try jobs failed on following builders:
  tryserver.chromium on chromium_presubmit

[Dominik Grewe, 2014-04-28 15:05:41]

The CQ bit was checked by dominikg@chromium.org

[commit-bot: I haz the power, 2014-04-28 15:05:58]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/dominikg@chromium.org/256043005/50001

[commit-bot: I haz the power, 2014-04-28 15:49:15]

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

[commit-bot: I haz the power, 2014-04-28 15:49:15]

Try jobs failed on following builders:
  tryserver.chromium on chromium_presubmit

[Dominik Grewe, 2014-04-28 16:03:34]

On 2014/04/28 15:49:15, I haz the power (commit-bot) wrote:
> Try jobs failed on following builders:
>   tryserver.chromium on chromium_presubmit

Looks like there's an issue with the CQ:
https://code.google.com/p/chromium/issues/detail?id=366489

[Dominik Grewe, 2014-04-29 08:50:18]

The CQ bit was checked by dominikg@chromium.org

[commit-bot: I haz the power, 2014-04-29 08:50:49]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/dominikg@chromium.org/256043005/50001

[commit-bot: I haz the power, 2014-04-29 09:11:47]

Change committed as 266796