[Telemetry] Disable testPowerMonitoringSync test on Mac & cleanup test macros

[Telemetry] Disable testPowerMonitoringSync test on Mac & cleanup test macros

testPowerMonitoringSync is an end-end test for power measurement and requires hardware that supports power usage measurement.  The Telemetry unit tests are currently run on a VM on the bots and don't support power measurement.

Disable this test in the interim.

In addition this CL changes a bunch of uses of benchmark.Disabled/Enabled -> telemetry.unit_test_util.test.Disabled/Enabled in unit tests.

BUG=440666
Committed: https://crrev.com/ae2ef3a160cd901e89ac3ef69d3edb6efb33b53a
Cr-Commit-Position: refs/heads/master@{#307687}

[jeremy, 2014-12-10 06:15:29]

jeremy@chromium.org changed reviewers:
+ skyostil@chromium.org

[marja, 2014-12-10 10:33:06]

marja@chromium.org changed reviewers:
+ marja@chromium.org

[marja, 2014-12-10 10:33:06]

rubberstamp lgtm, as you know better than me why the benchmark.Disabled/Enabled
-> telemetry.unit_test_util.test.Disabled/Enabled is the right way :)

https://codereview.chromium.org/789043003/diff/1/tools/telemetry/telemetry/co...
File tools/telemetry/telemetry/core/platform/platform_backend_unittest.py
(right):

https://codereview.chromium.org/789043003/diff/1/tools/telemetry/telemetry/co...
tools/telemetry/telemetry/core/platform/platform_backend_unittest.py:14: 
nit: no extra blank line

[jeremy, 2014-12-10 11:19:56]

The CQ bit was checked by jeremy@chromium.org

[commit-bot: I haz the power, 2014-12-10 11:20:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/789043003/20001

[Sami, 2014-12-10 12:04:51]

lgtm x2

[commit-bot: I haz the power, 2014-12-10 13:15:49]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2014-12-10 13:16:33]

Patchset 2 (id:??) landed as
https://crrev.com/ae2ef3a160cd901e89ac3ef69d3edb6efb33b53a
Cr-Commit-Position: refs/heads/master@{#307687}