Sync the Element interface with the many specs

Sync the Element interface with the many specs

https://dom.spec.whatwg.org/#interface-element
and many other specs with partial Element interfaces.

Arguments named namespace were not renamed, as it is a C++ keyword.

No FIXMEs were added where the spec says [TreatNullAs=EmptyString] but
we use [TreatNullAs=NullString], as that's a general issue that can be
found simply be searching for "TreatNullAs=NullString".

Likewise, [NewObject] and [SameObject] were not added:
https://code.google.com/p/chromium/issues/detail?id=462913

The only changes to the generated code are due to renamed arguments.

BUG=460722
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=191079

[philipj_slow, 2015-03-01 01:44:51]

philipj@opera.com changed reviewers:
+ haraken@chromium.org

[philipj_slow, 2015-03-01 01:44:52]

PTAL, depends on https://codereview.chromium.org/970553002/

[haraken, 2015-03-01 08:58:35]

haraken@chromium.org changed reviewers:
+ bashi@chromium.org

[haraken, 2015-03-01 08:58:35]

LGTM

https://codereview.chromium.org/970603002/diff/1/Source/core/dom/Element.idl
File Source/core/dom/Element.idl (right):

https://codereview.chromium.org/970603002/diff/1/Source/core/dom/Element.idl#...
Source/core/dom/Element.idl:82: // FIXME: scrollIntoView() should have a
ScrollIntoViewOptions dictionary argument.

+bashi, FYI.

[philipj_slow, 2015-03-02 00:02:49]

The CQ bit was checked by philipj@opera.com

[commit-bot: I haz the power, 2015-03-02 00:04:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/970603002/1

[commit-bot: I haz the power, 2015-03-02 05:02:03]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=191079