Change CSSCustomPropertyDeclaration::id() to isInherit() and isInitial()

Change CSSCustomPropertyDeclaration::id() to isInherit() and isInitial()

This patch changes CSSCustomPropertyDeclaration so that we can query
whether the declaration inherits or is the initial value. This is a
little nicer since we don't have to expose the internal value for
denoting variable references, CSSValueInternalVariableValue.

Committed: https://crrev.com/b2c39794fc5139948290de19c3f38eb006cb6b44
Cr-Commit-Position: refs/heads/master@{#421785}

[Timothy Loh, 2016-09-29 07:44:24]

The CQ bit was checked by timloh@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-29 07:44:51]

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

[Timothy Loh, 2016-09-29 07:51:41]

The CQ bit was checked by timloh@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-29 07:52:05]

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

[Timothy Loh, 2016-09-29 08:09:19]

timloh@chromium.org changed reviewers:
+ meade@chromium.org

[meade_UTC10, 2016-09-29 08:14:02]

lgtm

[Timothy Loh, 2016-09-29 08:18:12]

The CQ bit was unchecked by timloh@chromium.org

[Timothy Loh, 2016-09-29 08:18:13]

The CQ bit was checked by timloh@chromium.org

[commit-bot: I haz the power, 2016-09-29 08:18:24]

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, 2016-09-29 09:21:06]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-29 09:22:55]

Description was changed from

==========
Change CSSCustomPropertyDeclaration::id() to isInherit() and isInitial()

This patch changes CSSCustomPropertyDeclaration so that we can query
whether the declaration inherits or is the initial value. This is a
little nicer since we don't have to expose the internal value for
denoting variable references, CSSValueInternalVariableValue.
==========

to

==========
Change CSSCustomPropertyDeclaration::id() to isInherit() and isInitial()

This patch changes CSSCustomPropertyDeclaration so that we can query
whether the declaration inherits or is the initial value. This is a
little nicer since we don't have to expose the internal value for
denoting variable references, CSSValueInternalVariableValue.

Committed: https://crrev.com/b2c39794fc5139948290de19c3f38eb006cb6b44
Cr-Commit-Position: refs/heads/master@{#421785}
==========

[commit-bot: I haz the power, 2016-09-29 09:22:56]

Patchset 2 (id:??) landed as
https://crrev.com/b2c39794fc5139948290de19c3f38eb006cb6b44
Cr-Commit-Position: refs/heads/master@{#421785}