Run components_unittests on mac master

Run components_unittests on mac master

BUG=170191

[iannucci, 2013-01-17 19:38:39]

lgtm

[Mike Stip (use stip instead), 2013-01-18 00:08:53]

lgtm

[commit-bot: I haz the power, 2013-01-18 03:44:08]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kaiwang@chromium.org/11967037/1

[commit-bot: I haz the power, 2013-01-18 03:56:02]

Couldn't make sense out of svn commit message:
Sending        build/masters/master.chromium.mac/master_gatekeeper_cfg.py
Sending        build/masters/master.chromium.mac/master_mac_cfg.py
Transmitting file data ..
Committed revision 177592.

Warning: post-commit hook failed (exit code 2) with output:
/opt/shared_hooks/post-commit.d/10_mailer.py:137: DeprecationWarning: The popen2
module is deprecated.  Use the subprocess module.
  import popen2
Post-commit mail timed out for r177592. Your commit succeeded,
but no mail was sent.

[commit-bot: I haz the power, 2013-01-18 03:59:47]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kaiwang@chromium.org/11967037/1

[commit-bot: I haz the power, 2013-01-18 03:59:49]

Failed to apply patch for
build/masters/master.chromium.mac/master_gatekeeper_cfg.py:
While running patch -p1 --forward --force --no-backup-if-mismatch;
  patching file build/masters/master.chromium.mac/master_gatekeeper_cfg.py
  Hunk #1 FAILED at 19.
  1 out of 1 hunk FAILED -- saving rejects to file
build/masters/master.chromium.mac/master_gatekeeper_cfg.py.rej

Patch:       build/masters/master.chromium.mac/master_gatekeeper_cfg.py
Index: masters/master.chromium.mac/master_gatekeeper_cfg.py
diff --git build/masters/master.chromium.mac/master_gatekeeper_cfg.py
build/masters/master.chromium.mac/master_gatekeeper_cfg.py
index
e294454273ef579dd2bb2d1bfe52da39356d2464..6d6455076d8437ff7eedd0a7bccf286470e85e4d
100644
--- a/build/masters/master.chromium.mac/master_gatekeeper_cfg.py
+++ b/build/masters/master.chromium.mac/master_gatekeeper_cfg.py
@@ -19,6 +19,7 @@ categories_steps = {
     'cc_unittests',
     'chrome_frame_net_tests',
     'chromedriver2_unittests',
+    'components_unittests',
     'content_browsertests',
     'content_unittests',
     'courgette_unittests',