>     [ImplementedAs=namedGetter] getter (NodeList or Element)? namedItem(DOMString name);

It should return just Element?. We have FIXME in the implementation of HTMLOptionsCollection::namedGetter, and http://w3c-test.org/html/infrastructure/common-dom-interfaces/collections/htmloptionscollection.html is failing due to this.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d9066877c61a7b81bdebaac0a658d25eedf72b8f

commit d9066877c61a7b81bdebaac0a658d25eedf72b8f
Author: Kent Tamura <tkent@chromium.org>
Date: Tue Aug 08 00:59:19 2017

Update comments on getters of HTMLOptionsCollection and RadioNodeList.

NOTRY=true

Bug:  695902 , 752877 
Change-Id: Idae08fba383baefdf8eb57e673c2f2a71138311d
Reviewed-on: https://chromium-review.googlesource.com/604811
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#492480}
[modify] https://crrev.com/d9066877c61a7b81bdebaac0a658d25eedf72b8f/third_party/WebKit/Source/core/html/HTMLOptionsCollection.idl
[modify] https://crrev.com/d9066877c61a7b81bdebaac0a658d25eedf72b8f/third_party/WebKit/Source/core/html/RadioNodeList.idl

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a07404eb05fd1ba547e20daeff759f709f5e123e

commit a07404eb05fd1ba547e20daeff759f709f5e123e
Author: Kent Tamura <tkent@chromium.org>
Date: Tue Aug 08 06:50:51 2017

Fix the return type of HTMLOptionsCollection's indexed property getter.

Change 'Node' to 'Element?' in order to match to HTMLCollection's getter.
This CL doesn't change any web-exposed behavior.

Bug:  695902 
Change-Id: Icfb8ca590eff1b581365350f6544f686be94bda2
Reviewed-on: https://chromium-review.googlesource.com/604813
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#492557}
[modify] https://crrev.com/a07404eb05fd1ba547e20daeff759f709f5e123e/third_party/WebKit/Source/core/html/HTMLOptionsCollection.idl

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e0d3d1ae7b3ae2957c328b90bee185adbe0ecd30

commit e0d3d1ae7b3ae2957c328b90bee185adbe0ecd30
Author: Kent Tamura <tkent@chromium.org>
Date: Wed Aug 09 05:02:22 2017

Add a counter for a quirky behavior of HTMLOptionsCollection.

Bug:  695902 
Change-Id: Id2ff69a54d13abd415e5a05564520e213384d61b
Reviewed-on: https://chromium-review.googlesource.com/606565
Reviewed-by: Takayoshi Kochi <kochi@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#492828}
[modify] https://crrev.com/e0d3d1ae7b3ae2957c328b90bee185adbe0ecd30/third_party/WebKit/Source/core/html/HTMLOptionsCollection.cpp
[modify] https://crrev.com/e0d3d1ae7b3ae2957c328b90bee185adbe0ecd30/third_party/WebKit/public/platform/web_feature.mojom
[modify] https://crrev.com/e0d3d1ae7b3ae2957c328b90bee185adbe0ecd30/tools/metrics/histograms/enums.xml

Waiting for the UseCounter data.

The NextAction date has arrived: 2017-11-01

Usage shows 0%
https://www.chromestatus.com/metrics/feature/timeline/popularity/2068

> Usage shows 0%

Yeah, I think we may change the behavior without sending intent-to-ship.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ea34d5887b9a78a94846321883f8fb537651aa06

commit ea34d5887b9a78a94846321883f8fb537651aa06
Author: Kent Tamura <tkent@chromium.org>
Date: Wed Jan 17 22:22:46 2018

HTMLOptionsCollection's named property getter should not return NodeList.

If the collection have multiple elements matched to the specified name,
it should return the first one.

The new behavior matches to Edge, Firefox and Safri. The NodeList
behavior was almost unused according to the UseCounter.

This CL removes fast/forms/select/named-options.html, because it is
covered by the following tests:
- external/wpt/html/infrastructure/common-dom-interfaces/collections/htmloptionscollection.html
- external/wpt/html/semantics/forms/the-select-element/select-named-getter.html

Bug:  695902 
Change-Id: Ib2857d8ef6a0b68bbfae4e24d760976d855a544b
Reviewed-on: https://chromium-review.googlesource.com/867810
Reviewed-by: Keishi Hattori <keishi@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#529917}
[delete] https://crrev.com/19e3c2e61f6e4864dbd1ba356b46cc70da36d4b6/third_party/WebKit/LayoutTests/external/wpt/html/infrastructure/common-dom-interfaces/collections/htmloptionscollection-expected.txt
[modify] https://crrev.com/ea34d5887b9a78a94846321883f8fb537651aa06/third_party/WebKit/LayoutTests/fast/dom/html-collections-named-getter-expected.txt
[modify] https://crrev.com/ea34d5887b9a78a94846321883f8fb537651aa06/third_party/WebKit/LayoutTests/fast/dom/html-collections-named-getter.html
[delete] https://crrev.com/19e3c2e61f6e4864dbd1ba356b46cc70da36d4b6/third_party/WebKit/LayoutTests/fast/forms/select/named-options-expected.txt
[delete] https://crrev.com/19e3c2e61f6e4864dbd1ba356b46cc70da36d4b6/third_party/WebKit/LayoutTests/fast/forms/select/named-options.html
[modify] https://crrev.com/ea34d5887b9a78a94846321883f8fb537651aa06/third_party/WebKit/LayoutTests/virtual/stable/webexposed/global-interface-listing-expected.txt
[modify] https://crrev.com/ea34d5887b9a78a94846321883f8fb537651aa06/third_party/WebKit/LayoutTests/webexposed/global-interface-listing-expected.txt
[modify] https://crrev.com/ea34d5887b9a78a94846321883f8fb537651aa06/third_party/WebKit/Source/core/html/forms/HTMLOptionsCollection.cpp
[modify] https://crrev.com/ea34d5887b9a78a94846321883f8fb537651aa06/third_party/WebKit/Source/core/html/forms/HTMLOptionsCollection.h
[modify] https://crrev.com/ea34d5887b9a78a94846321883f8fb537651aa06/third_party/WebKit/Source/core/html/forms/HTMLOptionsCollection.idl
[modify] https://crrev.com/ea34d5887b9a78a94846321883f8fb537651aa06/third_party/WebKit/public/platform/web_feature.mojom
[modify] https://crrev.com/ea34d5887b9a78a94846321883f8fb537651aa06/tools/metrics/histograms/enums.xml