Remove WTF::static_pointer_cast functions.

Remove WTF::static_pointer_cast functions.

They are RefPtr/PassRefPtr versions of std::static_pointer_cast, and
not used any longer in Blink.

This CL also removes unused SVGListPropertyHelper::toDerived(), which used
WTF::static_pointer_cast in pre-Oilpan era.

This CL has no behavior changes.

BUG=583200
Committed: https://crrev.com/945412be9ef3e46e0203c872903af78d0f3fe03f
Cr-Commit-Position: refs/heads/master@{#412734}

[tkent, 2016-08-18 00:23:57]

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

[commit-bot: I haz the power, 2016-08-18 00:24:43]

Dry run: 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, 2016-08-18 02:22:25]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-08-18 02:22:26]

Dry run: This issue passed the CQ dry run.

[tkent, 2016-08-18 03:13:17]

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

[tkent, 2016-08-18 03:13:18]

yutak@, would you review this please?

[tkent, 2016-08-18 03:20:56]

Description was changed from

==========
Remove WTF::static_pointer_cast functions.

They were RefPtr/PassRefPtr versions of std::static_pointer_cast, and they are
not used any longer in Blink.

This CL also removes unused SVGListPropertyHelper::toDerived(), which used
WTF::static_pointer_cast in pre-Oilpan era.

This CL has no behavior changes.

BUG=583200
==========

to

==========
Remove WTF::static_pointer_cast functions.

They are RefPtr/PassRefPtr versions of std::static_pointer_cast, and 
not used any longer in Blink.

This CL also removes unused SVGListPropertyHelper::toDerived(), which used
WTF::static_pointer_cast in pre-Oilpan era.

This CL has no behavior changes.

BUG=583200
==========

[Yuta Kitamura, 2016-08-18 03:36:23]

lgtm

[tkent, 2016-08-18 03:49:29]

The CQ bit was checked by tkent@chromium.org

[commit-bot: I haz the power, 2016-08-18 03:49:49]

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, 2016-08-18 04:01:19]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-18 04:03:47]

Description was changed from

==========
Remove WTF::static_pointer_cast functions.

They are RefPtr/PassRefPtr versions of std::static_pointer_cast, and 
not used any longer in Blink.

This CL also removes unused SVGListPropertyHelper::toDerived(), which used
WTF::static_pointer_cast in pre-Oilpan era.

This CL has no behavior changes.

BUG=583200
==========

to

==========
Remove WTF::static_pointer_cast functions.

They are RefPtr/PassRefPtr versions of std::static_pointer_cast, and
not used any longer in Blink.

This CL also removes unused SVGListPropertyHelper::toDerived(), which used
WTF::static_pointer_cast in pre-Oilpan era.

This CL has no behavior changes.

BUG=583200

Committed: https://crrev.com/945412be9ef3e46e0203c872903af78d0f3fe03f
Cr-Commit-Position: refs/heads/master@{#412734}
==========

[commit-bot: I haz the power, 2016-08-18 04:03:48]

Patchset 1 (id:??) landed as
https://crrev.com/945412be9ef3e46e0203c872903af78d0f3fe03f
Cr-Commit-Position: refs/heads/master@{#412734}