Switched feature usage trace events to use the stable feature ID's

Switched feature usage trace events to use the stable feature ID's

The trace events for CSS feature usage were using the unstable property
ID which doesn't match what is reported in UMA.  This change switches
the trace events to use the same stable feature ID that is reported to
UMA.

BUG=671731
Committed: https://crrev.com/9f983fdfad8789c3c70e818d2cb452cd497ac407
Cr-Commit-Position: refs/heads/master@{#436762}

[Pat Meenan, 2016-12-06 21:01:52]

pmeenan@chromium.org changed reviewers:
+ rbyers@chromium.org

[Pat Meenan, 2016-12-06 21:01:53]

rbyers@ - PTAL.  This is the change to CSS feature ID's discussed in the HTTP
Archive issue.

[Rick Byers, 2016-12-06 21:04:37]

LGTM
I should have caught this in the original review - sorry.

[Pat Meenan, 2016-12-06 21:05:38]

The CQ bit was checked by pmeenan@chromium.org

[commit-bot: I haz the power, 2016-12-06 21:06:10]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-12-06 22:44:46]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481058338008920, "parent_rev":
"befad33644e011658374e987753f4fd84874ff2c", "commit_rev":
"8d8f6e381e4b0436ea1c37933f256a9ba3394784"}

[commit-bot: I haz the power, 2016-12-06 22:46:10]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-06 22:49:03]

Description was changed from

==========
Switched feature usage trace events to use the stable feature ID's

The trace events for CSS feature usage were using the unstable property
ID which doesn't match what is reported in UMA.  This change switches
the trace events to use the same stable feature ID that is reported to
UMA.

BUG=671731
==========

to

==========
Switched feature usage trace events to use the stable feature ID's

The trace events for CSS feature usage were using the unstable property
ID which doesn't match what is reported in UMA.  This change switches
the trace events to use the same stable feature ID that is reported to
UMA.

BUG=671731

Committed: https://crrev.com/9f983fdfad8789c3c70e818d2cb452cd497ac407
Cr-Commit-Position: refs/heads/master@{#436762}
==========

[commit-bot: I haz the power, 2016-12-06 22:49:04]

Patchset 1 (id:??) landed as
https://crrev.com/9f983fdfad8789c3c70e818d2cb452cd497ac407
Cr-Commit-Position: refs/heads/master@{#436762}