Convert mojo_common_unittests to run exclusively on Swarming

Convert mojo_common_unittests to run exclusively on Swarming

0 configs already ran on Swarming
18 used to run locally and were converted:
- chromium.fyi.json: Linux Trusty
- chromium.fyi.json: Linux Trusty (dbg)
- chromium.linux.json: Android GN
- chromium.linux.json: Linux Tests
- chromium.linux.json: Linux Tests (dbg)(1)
- chromium.linux.json: Linux Tests (dbg)(1)(32)
- chromium.mac.json: Mac10.10 Tests
- chromium.mac.json: Mac10.6 Tests
- chromium.mac.json: Mac10.8 Tests
- chromium.mac.json: Mac10.9 Tests
- chromium.mac.json: Mac10.9 Tests (dbg)
- chromium.memory.fyi.json: Linux ChromeOS MSan Tests
- chromium.memory.fyi.json: Linux MSan Tests
- chromium.memory.fyi.json: Linux TSan Tests
- chromium.win.json: Vista Tests (1)
- chromium.win.json: Win 7 Tests x64 (1)
- chromium.win.json: Win7 Tests (1)
- chromium.win.json: Win7 Tests (dbg)(1)

Ran:
  ./manage.py --convert mojo_common_unittests

R=jam@chromium.org
BUG=98637
Committed: https://crrev.com/194f4c6bea6ae714cfa6a0eb32bf7e79a70e0192
Cr-Commit-Position: refs/heads/master@{#338558}

[M-A Ruel, 2015-07-13 15:01:34]

maruel@chromium.org changed reviewers:
+ jam@chromium.org
- sky@chromium.org

[M-A Ruel, 2015-07-13 15:02:59]

sky -> jam
There's 11 tests to isolate in total.

[jam, 2015-07-13 15:50:03]

lgtm

[M-A Ruel, 2015-07-13 18:35:10]

The CQ bit was checked by maruel@chromium.org

[commit-bot: I haz the power, 2015-07-13 18:37:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1235763002/1

[commit-bot: I haz the power, 2015-07-13 20:39:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-13 20:40:37]

Patchset 1 (id:??) landed as
https://crrev.com/194f4c6bea6ae714cfa6a0eb32bf7e79a70e0192
Cr-Commit-Position: refs/heads/master@{#338558}

[eugenis, 2015-07-14 18:49:36]

Hi,

this broke the MSan bot:

http://build.chromium.org/p/chromium.memory.fyi/builders/Linux%20ChromeOS%20M...

../out/Release/mojo_common_unittests: error while loading shared libraries:
libc++.so: cannot open shared object file: No such file or directory

MSan uses libc++ on Linux, unlike the normal build. Do you need to do anything
special to link libc++ on swarming?