cc: Never block on uploads from previous frame and increase max pending uploads.

cc: Never block on uploads from previous frame and increase max pending uploads.

By discarding pending uploads after drawing we allow multiple frames with
reasonable amounts of uploads in the pipeline at the same time.

Also increase maxPendingUpdateIntervals to allow an estimated 16ms of
texture uploads per frame without blocking.

BUG=152631
TEST=manual


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=159654

[reveman, 2012-09-30 19:45:38]

This should allow multiple frames in the pipeline, each with 16ms worth of
estimated texture uploads.

[brianderson, 2012-10-01 20:29:17]

couldn't tell from a quick look, which part of this patch increases the pending
uploads to 16ms?

[reveman, 2012-10-01 21:55:29]

On 2012/10/01 20:29:17, Brian Anderson wrote:
> couldn't tell from a quick look, which part of this patch increases the
pending
> uploads to 16ms?

Oh, looks like I somehow lost that change before uploading this patch. I'll
upload a new patch that has maxPendingUpdateIntervals set to 4, which at the
current tick rate will mean 16ms worth of uploads.

[nduca, 2012-10-01 22:15:19]

I just dont get this.

[nduca, 2012-10-01 22:58:02]

LGTM but lets get a better name. NoLongerNeeded, Obsolete, Etc.

[nduca, 2012-10-02 05:41:29]

lgtm

[commit-bot: I haz the power, 2012-10-02 05:42:38]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/[email protected]/11008017/17001

[commit-bot: I haz the power, 2012-10-02 08:11:53]

Change committed as 159654