[Telemetry] Add test case for power usage of background animations/heavy tab.

[Telemetry] Add test case for power usage of background animations/heavy tab.

Add a test case for quiescent power with the following tabs open:
* Animated gif (in background).
* GMail
* Below the fold animated gif
* Below the fold flash (in foreground).

BUG=339180
R=tonyg@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=262360

[tonyg, 2014-03-31 17:16:09]

lgtm

https://codereview.chromium.org/213183003/diff/1/tools/perf/benchmarks/tab_sw...
File tools/perf/benchmarks/tab_switching.py (right):

https://codereview.chromium.org/213183003/diff/1/tools/perf/benchmarks/tab_sw...
tools/perf/benchmarks/tab_switching.py:19: class
TabSwitchingPowerMeasurement(test.Test):
Let's call this TabSwitchingToughEnergyCases.

https://codereview.chromium.org/213183003/diff/1/tools/perf/page_sets/power_i...
File tools/perf/page_sets/power_intensive.json (right):

https://codereview.chromium.org/213183003/diff/1/tools/perf/page_sets/power_i...
tools/perf/page_sets/power_intensive.json:1: {
Let's name this tough_energy_cases.json or tough_power_cases.json to be more
consistent with the other page set naming conventions.

[jeremy, 2014-04-02 06:01:26]

The CQ bit was checked by jeremy@chromium.org

[commit-bot: I haz the power, 2014-04-02 06:01:57]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jeremy@chromium.org/213183003/10001

[commit-bot: I haz the power, 2014-04-02 06:31:36]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-04-02 06:31:36]

Retried try job too often on chromium_presubmit for step(s) presubmit
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=chromium_p...

[jeremy, 2014-04-08 09:18:40]

Committed patchset #2 manually as r262360 (presubmit successful).