Adjust VideoCaptureOracle wrt. out of order captures.

Adjust VideoCaptureOracle wrt. out of order captures.

Currently VideoCaptureOracle rejects out-of-order captures. This can cause
issues if a capture fast-fails, delivering a failed out of order capture
result. This failed result will cause pending successful results to be
incorrectly discarded.

With browser impl side painting on, this behavior causes a regression in
tab capture performance.

This change ensures that we only reject out-of-order successful captures
(ignoring out-of-order failures).

R=miu@chromium.org
BUG=498910
Committed: https://crrev.com/36ff3b81b1cf38242e55a684760f9b0e3b4fb2cb
Cr-Commit-Position: refs/heads/master@{#334102}

[miu, 2015-06-12 00:03:55]

The CQ bit was checked by miu@chromium.org

[miu, 2015-06-12 00:03:55]

lgtm

100% LGTM.  Thanks for finding this and resolving the issue!  :)

[commit-bot: I haz the power, 2015-06-12 00:05:27]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1183553002/1

[commit-bot: I haz the power, 2015-06-12 01:24:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-12 01:26:28]

Patchset 1 (id:??) landed as
https://crrev.com/36ff3b81b1cf38242e55a684760f9b0e3b4fb2cb
Cr-Commit-Position: refs/heads/master@{#334102}