Convert midi_unittests to run exclusively on Swarming

Convert midi_unittests to run exclusively on Swarming

13 configs already ran on Swarming
16 used to run locally and were converted:
- chromium.chromiumos.json: Linux ChromiumOS Ozone Tests (1)
- chromium.chromiumos.json: Linux ChromiumOS Tests (1)
- chromium.chromiumos.json: Linux ChromiumOS Tests (dbg)(1)
- chromium.fyi.json: CrWinAsan tester
- chromium.fyi.json: CrWinAsan(dll) tester
- chromium.fyi.json: Linux Trusty
- chromium.fyi.json: Linux Trusty (dbg)
- chromium.linux.json: Cast Linux
- chromium.memory.fyi.json: Linux ChromeOS MSan Tests
- chromium.memory.fyi.json: Linux MSan Tests
- chromium.memory.fyi.json: Linux TSan Tests
- chromium.memory.json: Linux ASan LSan Tests (1)
- chromium.memory.json: Linux Chromium OS ASan LSan Tests (1)
- chromium.memory.json: Mac ASan 64 Tests (1)
- chromium.webkit.json: Linux ChromiumOS Tests (1)
- chromium.webkit.json: Linux ChromiumOS Tests (dbg)(1)

Ran:
  ./manage.py --convert midi_unittests

TBR=dpranke@chromium.org
BUG=98637
Committed: https://crrev.com/6400ec5916dcf2939517ac358bebbfcfc375ef17
Cr-Commit-Position: refs/heads/master@{#336377}

[M-A Ruel, 2015-06-26 13:56:42]

This is a redo of https://codereview.chromium.org/1208103004. It was reverted in
https://codereview.chromium.org/1210933003/ but the reason mention is only
related to ui_unittests which is unrelated to midi_unittests and is likely more
related to https://codereview.chromium.org/1206413002, ui_base_unittests.

[M-A Ruel, 2015-06-26 14:45:23]

On 2015/06/26 13:56:42, M-A Ruel wrote:
> This is a redo of https://codereview.chromium.org/1208103004. It was reverted
in
> https://codereview.chromium.org/1210933003/ but the reason mention is only
> related to ui_unittests which is unrelated to midi_unittests and is likely
more
> related to https://codereview.chromium.org/1206413002, ui_base_unittests.

TBR'ing since I confirmed the problem was with the other CL.

[M-A Ruel, 2015-06-26 14:45:25]

The CQ bit was checked by maruel@chromium.org

[commit-bot: I haz the power, 2015-06-26 14:46:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1212893002/1

[commit-bot: I haz the power, 2015-06-26 15:58:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-26 15:59:52]

Patchset 1 (id:??) landed as
https://crrev.com/6400ec5916dcf2939517ac358bebbfcfc375ef17
Cr-Commit-Position: refs/heads/master@{#336377}

[Dirk Pranke, 2015-06-26 16:00:43]

lgtm