Probe whether MFPlat.dll is present on Windows systems.

Probe whether MFPlat.dll is present on Windows systems.

Not all versions of Windows 7 and later ship with Media Foundation DLLs. Instead of crashing while attempting to delay load the DLL, preemptively load the library and fail gracefully if we're unable to do so.

BUG=339678
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=248586

[scherkus (not reviewing), 2014-02-01 02:13:37]

scottmg: PTAL
fischman/ananta: FYI


tested it out by changing the code to a nonsensical DLL name and it falls back
to software as expected

it'd be nicer if we could detect this earlier so chrome://gpu doesn't report
that HW decode is available ... but this will definitely help make the crashes
go away in the interim

[scottmg, 2014-02-01 03:10:28]

lgtm

[scherkus (not reviewing), 2014-02-03 19:27:51]

The CQ bit was checked by scherkus@chromium.org

[commit-bot: I haz the power, 2014-02-03 19:28:51]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/scherkus@chromium.org/151993002/1

[commit-bot: I haz the power, 2014-02-03 22:05:18]

Change committed as 248586

[commit-bot: I haz the power, 2014-02-03 22:05:22]

CQ bit was unchecked on CL. Ignoring.

[commit-bot: I haz the power, 2014-02-03 22:05:29]

CQ bit was unchecked on CL. Ignoring.