Remove VirtualKeyboardUsabilityExperimentTest

Remove VirtualKeyboardUsabilityExperimentTest

The test was added for keyboard usability experiment which is no longer
needed.

BUG=413583
TEST=none

Committed: https://crrev.com/003db13b9107edee3723ac1a5a3d4d56e9e2ce97
Cr-Commit-Position: refs/heads/master@{#294873}

[Yufeng Shen (Slow to review), 2014-09-15 17:53:13]

miletus@chromium.org changed reviewers:
+ bshe@chromium.org, oshima@chromium.org

[Yufeng Shen (Slow to review), 2014-09-15 17:57:00]

Hey Oshima,

This test is crashing after my CL 
https://codereview.chromium.org/559213002/.

I am removing this test instead of fixing it since the usability
is no longer needed.

[oshima, 2014-09-15 18:08:40]

lgtm

In a separate CL, can you (or bshe) remove the code this is testing?

[Yufeng Shen (Slow to review), 2014-09-15 18:22:49]

On 2014/09/15 18:08:40, oshima wrote:
> lgtm
> 
> In a separate CL, can you (or bshe) remove the code this is testing?

Yes, bshe@ is going to remove all the actual usability mode code.

[Yufeng Shen (Slow to review), 2014-09-15 18:22:53]

The CQ bit was checked by miletus@chromium.org

[commit-bot: I haz the power, 2014-09-15 18:25:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/569323002/1

[commit-bot: I haz the power, 2014-09-15 19:59:08]

Committed patchset #1 (id:1) as d2c60d3d461cb0e3470db338eaab3b68bf4022d1

[commit-bot: I haz the power, 2014-09-15 20:03:01]

Patchset 1 (id:??) landed as
https://crrev.com/003db13b9107edee3723ac1a5a3d4d56e9e2ce97
Cr-Commit-Position: refs/heads/master@{#294873}