Add accelerated_video_decode as a GPU blacklist feature.

Add accelerated_video_decode as a GPU blacklist feature.

Note that this CL does not hook the blacklist with the disabling of the feature.  Will do that in another CL.

BUG=139683
TEST=unit_tests
TBR=jam
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=149275

[Zhenyao Mo, 2012-07-30 23:35:16]

Please have a look.

[Ami GONE FROM CHROMIUM, 2012-07-30 23:38:29]

LGTM % I don't know how this stuff works (wait for kbr's say-so).

https://chromiumcodereview.appspot.com/10831081/diff/1/chrome/browser/gpu_uti...
File chrome/browser/gpu_util.cc (right):

https://chromiumcodereview.appspot.com/10831081/diff/1/chrome/browser/gpu_uti...
chrome/browser/gpu_util.cc:384: true
Not sure what the "true" here means; if it means SW fallback is available, then
fine.  If it means that blacklist is applied by default, then no thank you :)

[Zhenyao Mo, 2012-07-30 23:40:10]

https://chromiumcodereview.appspot.com/10831081/diff/1/chrome/browser/gpu_uti...
File chrome/browser/gpu_util.cc (right):

https://chromiumcodereview.appspot.com/10831081/diff/1/chrome/browser/gpu_uti...
chrome/browser/gpu_util.cc:384: true
On 2012/07/30 23:38:29, Ami Fischman wrote:
> Not sure what the "true" here means; if it means SW fallback is available,
then
> fine.  If it means that blacklist is applied by default, then no thank you :)

It means it falls back to SW path.

[Zhenyao Mo, 2012-07-31 20:17:26]

Ken, please review.

[Ken Russell (switch to Gerrit), 2012-07-31 21:09:34]

lgtm