Fix WM_POWERBROADCAST handling

Fix WM_POWERBROADCAST handling

This is a follow up CL of r185433, which mistook |message| for |wparam|.
With this CL, base::PowerMonitor and base::PowerObserver become
functional again on Windows.

BUG=314477, 149059
TEST=manually done with a debugger (by disconnecting the power supply cable)

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=232900

[cpu_(ooo_6.6-7.5), 2013-11-03 17:20:22]

lgtm

https://codereview.chromium.org/57383002/diff/50001/base/power_monitor/power_...
File base/power_monitor/power_monitor_device_source_win.cc (left):

https://codereview.chromium.org/57383002/diff/50001/base/power_monitor/power_...
base/power_monitor/power_monitor_device_source_win.cc:106: DWORD power_event =
static_cast<DWORD>(message);
Ah I see the bug.

[yukawa, 2013-11-03 18:21:20]

Hi Nico,
Could you take an owner review?

Basically there is no behavioral change except for the argument of
ProcessWmPowerBroadcastMessage.  It should have been
ProcessWmPowerBroadcastMessage(wparam);

[Nico, 2013-11-03 18:25:34]

lgtm stamp

[commit-bot: I haz the power, 2013-11-03 19:04:29]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yukawa@chromium.org/57383002/50001

[commit-bot: I haz the power, 2013-11-03 21:10:33]

Retried try job too often on win7_aura for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win7_aura&...

[commit-bot: I haz the power, 2013-11-04 13:38:01]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yukawa@chromium.org/57383002/50001

[commit-bot: I haz the power, 2013-11-04 16:03:31]

Retried try job too often on win7_aura for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win7_aura&...

[commit-bot: I haz the power, 2013-11-05 00:27:16]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yukawa@chromium.org/57383002/50001

[commit-bot: I haz the power, 2013-11-05 03:23:17]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yukawa@chromium.org/57383002/50001

[commit-bot: I haz the power, 2013-11-05 04:15:29]

Change committed as 232900