Updated stale generated class comment in CSSPropertyAPI.h

Updated stale generated class comment in CSSPropertyAPI.h

Added note that not all property APIs implement all the methods.

BUG=668012
Review-Url: https://codereview.chromium.org/2860573012
Cr-Commit-Position: refs/heads/master@{#469596}
Committed: https://chromium.googlesource.com/chromium/src/+/6597730dd27c7207682ef6390f9388a83d56a702

[Bugs Nash, 2017-05-05 01:26:01]

bugsnash@chromium.org changed reviewers:
+ jiameng@chromium.org

[Jia, 2017-05-05 01:33:25]

On 2017/05/05 01:26:02, Bugs Nash wrote:

LGTM

[Bugs Nash, 2017-05-05 01:38:12]

bugsnash@chromium.org changed reviewers:
+ ericwilligers@chromium.org

[Bugs Nash, 2017-05-05 01:38:23]

+eric for committers

[Eric Willigers, 2017-05-05 02:40:21]

lgtm

[Bugs Nash, 2017-05-05 03:07:01]

The CQ bit was checked by bugsnash@chromium.org

[commit-bot: I haz the power, 2017-05-05 03:07:19]

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, 2017-05-05 04:43:51]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493953621951250, "parent_rev":
"fad224fbb037adf1a6f37633708732f758f39497", "commit_rev":
"6597730dd27c7207682ef6390f9388a83d56a702"}

[commit-bot: I haz the power, 2017-05-05 04:44:36]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493953621951250, "parent_rev":
"fad224fbb037adf1a6f37633708732f758f39497", "commit_rev":
"6597730dd27c7207682ef6390f9388a83d56a702"}

[commit-bot: I haz the power, 2017-05-05 04:44:38]

Description was changed from

==========
Updated stale generated class comment in CSSPropertyAPI.h

Added note that not all property APIs implement all the methods.

BUG=668012
==========

to

==========
Updated stale generated class comment in CSSPropertyAPI.h

Added note that not all property APIs implement all the methods.

BUG=668012

Review-Url: https://codereview.chromium.org/2860573012
Cr-Commit-Position: refs/heads/master@{#469596}
Committed:
https://chromium.googlesource.com/chromium/src/+/6597730dd27c7207682ef6390f93...
==========

[commit-bot: I haz the power, 2017-05-05 04:44:43]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6597730dd27c7207682ef6390f93...