Simplify PROGRESS shadow elements.

Simplify PROGRESS shadow elements.

This CL removes the following elements, and use ProgressShadowElement instead.
 - ProgressInnerElement
 - ProgressBarElement
 - ProgressValueElement

The difference between ProgressInnerElement and ProgressShadowElement was only
openShadowRoot() check in layoutObjectIsNeeded().  The check is unnecessary now
because PROGRESS element can't have an open ShadowRoot.

ProgressBarElement and ProgressShadowElement were identical.

The difference between ProgressValueElement and ProgressShadowElement was only
setWidthPercentage(). The function is moved to HTMLProgressElement.

This CL has no behavior changes.

BUG=609687
Committed: https://crrev.com/a21d40e8c4fddd9af8180dfa968794d6a9350eae
Cr-Commit-Position: refs/heads/master@{#392028}

[tkent, 2016-05-06 08:57:10]

Description was changed from

==========
Simplify PROGRESS shadow elements.

This CL removes the follwoing elements, and use ProgressShadowElement instaed.
 - ProgressInnerElement
 - ProgressBarElement
 - ProgressValueElement

The difference between ProgressInnerElement and ProgressShadowElement was only
openShadowRoot() check in layoutObjectIsNeeded().  The check is unnecessary now
because PROGRESS elemenet can't have an open ShadowRoot.

The difference between ProgressValueElement and ProgressShadowElement was only
setWidthPercentage(). The function is moved to HTMLProgressElement.

This CL has no behavior changes.

BUG=609687
==========

to

==========
Simplify PROGRESS shadow elements.

This CL removes the following elements, and use ProgressShadowElement instead.
 - ProgressInnerElement
 - ProgressBarElement
 - ProgressValueElement

The difference between ProgressInnerElement and ProgressShadowElement was only
openShadowRoot() check in layoutObjectIsNeeded().  The check is unnecessary now
because PROGRESS element can't have an open ShadowRoot.

ProgressBarElement and ProgressSHadowElement were identical.

The difference between ProgressValueElement and ProgressShadowElement was only
setWidthPercentage(). The function is moved to HTMLProgressElement.

This CL has no behavior changes.

BUG=609687
==========

[tkent, 2016-05-06 08:57:37]

tkent@chromium.org changed reviewers:
+ kochi@chromium.org

[tkent, 2016-05-06 08:57:38]

kochi@, would you review this please?

[kochi, 2016-05-06 10:01:44]

lgtm

[tkent, 2016-05-06 10:11:57]

Description was changed from

==========
Simplify PROGRESS shadow elements.

This CL removes the following elements, and use ProgressShadowElement instead.
 - ProgressInnerElement
 - ProgressBarElement
 - ProgressValueElement

The difference between ProgressInnerElement and ProgressShadowElement was only
openShadowRoot() check in layoutObjectIsNeeded().  The check is unnecessary now
because PROGRESS element can't have an open ShadowRoot.

ProgressBarElement and ProgressSHadowElement were identical.

The difference between ProgressValueElement and ProgressShadowElement was only
setWidthPercentage(). The function is moved to HTMLProgressElement.

This CL has no behavior changes.

BUG=609687
==========

to

==========
Simplify PROGRESS shadow elements.

This CL removes the following elements, and use ProgressShadowElement instead.
 - ProgressInnerElement
 - ProgressBarElement
 - ProgressValueElement

The difference between ProgressInnerElement and ProgressShadowElement was only
openShadowRoot() check in layoutObjectIsNeeded().  The check is unnecessary now
because PROGRESS element can't have an open ShadowRoot.

ProgressBarElement and ProgressShadowElement were identical.

The difference between ProgressValueElement and ProgressShadowElement was only
setWidthPercentage(). The function is moved to HTMLProgressElement.

This CL has no behavior changes.

BUG=609687
==========

[tkent, 2016-05-06 10:12:03]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2016-05-06 10:12:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1957593003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1957593003/1

[commit-bot: I haz the power, 2016-05-06 10:17:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-06 10:18:38]

Description was changed from

==========
Simplify PROGRESS shadow elements.

This CL removes the following elements, and use ProgressShadowElement instead.
 - ProgressInnerElement
 - ProgressBarElement
 - ProgressValueElement

The difference between ProgressInnerElement and ProgressShadowElement was only
openShadowRoot() check in layoutObjectIsNeeded().  The check is unnecessary now
because PROGRESS element can't have an open ShadowRoot.

ProgressBarElement and ProgressShadowElement were identical.

The difference between ProgressValueElement and ProgressShadowElement was only
setWidthPercentage(). The function is moved to HTMLProgressElement.

This CL has no behavior changes.

BUG=609687
==========

to

==========
Simplify PROGRESS shadow elements.

This CL removes the following elements, and use ProgressShadowElement instead.
 - ProgressInnerElement
 - ProgressBarElement
 - ProgressValueElement

The difference between ProgressInnerElement and ProgressShadowElement was only
openShadowRoot() check in layoutObjectIsNeeded().  The check is unnecessary now
because PROGRESS element can't have an open ShadowRoot.

ProgressBarElement and ProgressShadowElement were identical.

The difference between ProgressValueElement and ProgressShadowElement was only
setWidthPercentage(). The function is moved to HTMLProgressElement.

This CL has no behavior changes.

BUG=609687

Committed: https://crrev.com/a21d40e8c4fddd9af8180dfa968794d6a9350eae
Cr-Commit-Position: refs/heads/master@{#392028}
==========

[commit-bot: I haz the power, 2016-05-06 10:18:39]

Patchset 1 (id:??) landed as
https://crrev.com/a21d40e8c4fddd9af8180dfa968794d6a9350eae
Cr-Commit-Position: refs/heads/master@{#392028}