Revert of Initial skeleton of Accessibility Object Model Phase 1

Revert of Initial skeleton of Accessibility Object Model Phase 1 (patchset #9 id:160001 of https://codereview.chromium.org/2750533006/ )

Reason for revert:
major renderer on Canary see crbug.com/707218

Original issue's description:
> Initial skeleton of Accessibility Object Model Phase 1
> 
> Explainer: https://github.com/WICG/aom/blob/master/explainer.md
> Spec: https://wicg.github.io/aom/spec/
> 
> This change adds an accessibleNode getter on Element, and implements
> the role and label properties of AccessibleNode, including a LayoutTest
> of the supported functionality.
> 
> Properties on an AccessibleNode are stored in a map for efficiency
> since there are dozens of possible properties and few will need to be
> set on any one particular object.
> 
> In existing accessibility code, places where we previously retrieve an
> ARIA attribute are replaced with a new wrapper that first checks the
> ARIA attribute and then checks the equivalent AOM property.
> 
> Once this change lands it should be relatively straightforward to implement
> the rest of the properties of AccessibleNode and complete Phase 1.
> 
> BUG=680345
> 
> Review-Url: https://codereview.chromium.org/2750533006
> Cr-Commit-Position: refs/heads/master@{#460670}
> Committed: https://chromium.googlesource.com/chromium/src/+/59b48ec0a88a1716bd4b39b2ac2d3021458749f4

TBR=esprehn@chromium.org,aboxhall@chromium.org,haraken@chromium.org,dmazzoni@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=680345, 707218
Review-Url: https://codereview.chromium.org/2796553002
Cr-Commit-Position: refs/heads/master@{#461332}
Committed: https://chromium.googlesource.com/chromium/src/+/71e44249f1bddfa5cfe90041b4b4cf497f39ecc0

[Will Harris, 2017-04-01 21:58:31]

The CQ bit was checked by wfh@chromium.org

[Will Harris, 2017-04-01 21:58:32]

Created Revert of Initial skeleton of Accessibility Object Model Phase 1

[commit-bot: I haz the power, 2017-04-01 21:58:41]

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

[Will Harris, 2017-04-01 21:58:46]

Description was changed from

==========
Revert of Initial skeleton of Accessibility Object Model Phase 1 (patchset #9
id:160001 of https://codereview.chromium.org/2750533006/ )

Reason for revert:
major crashes on renderer see crbug.com/707218

Original issue's description:
> Initial skeleton of Accessibility Object Model Phase 1
> 
> Explainer: https://github.com/WICG/aom/blob/master/explainer.md
> Spec: https://wicg.github.io/aom/spec/
> 
> This change adds an accessibleNode getter on Element, and implements
> the role and label properties of AccessibleNode, including a LayoutTest
> of the supported functionality.
> 
> Properties on an AccessibleNode are stored in a map for efficiency
> since there are dozens of possible properties and few will need to be
> set on any one particular object.
> 
> In existing accessibility code, places where we previously retrieve an
> ARIA attribute are replaced with a new wrapper that first checks the
> ARIA attribute and then checks the equivalent AOM property.
> 
> Once this change lands it should be relatively straightforward to implement
> the rest of the properties of AccessibleNode and complete Phase 1.
> 
> BUG=680345
> 
> Review-Url: https://codereview.chromium.org/2750533006
> Cr-Commit-Position: refs/heads/master@{#460670}
> Committed:
https://chromium.googlesource.com/chromium/src/+/59b48ec0a88a1716bd4b39b2ac2d...

TBR=esprehn@chromium.org,aboxhall@chromium.org,haraken@chromium.org,dmazzoni@...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=680345
==========

to

==========
Revert of Initial skeleton of Accessibility Object Model Phase 1 (patchset #9
id:160001 of https://codereview.chromium.org/2750533006/ )

Reason for revert:
major renderer on Canary see crbug.com/707218

Original issue's description:
> Initial skeleton of Accessibility Object Model Phase 1
> 
> Explainer: https://github.com/WICG/aom/blob/master/explainer.md
> Spec: https://wicg.github.io/aom/spec/
> 
> This change adds an accessibleNode getter on Element, and implements
> the role and label properties of AccessibleNode, including a LayoutTest
> of the supported functionality.
> 
> Properties on an AccessibleNode are stored in a map for efficiency
> since there are dozens of possible properties and few will need to be
> set on any one particular object.
> 
> In existing accessibility code, places where we previously retrieve an
> ARIA attribute are replaced with a new wrapper that first checks the
> ARIA attribute and then checks the equivalent AOM property.
> 
> Once this change lands it should be relatively straightforward to implement
> the rest of the properties of AccessibleNode and complete Phase 1.
> 
> BUG=680345
> 
> Review-Url: https://codereview.chromium.org/2750533006
> Cr-Commit-Position: refs/heads/master@{#460670}
> Committed:
https://chromium.googlesource.com/chromium/src/+/59b48ec0a88a1716bd4b39b2ac2d...

TBR=esprehn@chromium.org,aboxhall@chromium.org,haraken@chromium.org,dmazzoni@...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=680345,707218
==========

[commit-bot: I haz the power, 2017-04-01 23:32:39]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491083911863090, "parent_rev":
"1bff079d86046751b67c4e45c7a85fa0df56bfc9", "commit_rev":
"71e44249f1bddfa5cfe90041b4b4cf497f39ecc0"}

[commit-bot: I haz the power, 2017-04-01 23:33:22]

Description was changed from

==========
Revert of Initial skeleton of Accessibility Object Model Phase 1 (patchset #9
id:160001 of https://codereview.chromium.org/2750533006/ )

Reason for revert:
major renderer on Canary see crbug.com/707218

Original issue's description:
> Initial skeleton of Accessibility Object Model Phase 1
> 
> Explainer: https://github.com/WICG/aom/blob/master/explainer.md
> Spec: https://wicg.github.io/aom/spec/
> 
> This change adds an accessibleNode getter on Element, and implements
> the role and label properties of AccessibleNode, including a LayoutTest
> of the supported functionality.
> 
> Properties on an AccessibleNode are stored in a map for efficiency
> since there are dozens of possible properties and few will need to be
> set on any one particular object.
> 
> In existing accessibility code, places where we previously retrieve an
> ARIA attribute are replaced with a new wrapper that first checks the
> ARIA attribute and then checks the equivalent AOM property.
> 
> Once this change lands it should be relatively straightforward to implement
> the rest of the properties of AccessibleNode and complete Phase 1.
> 
> BUG=680345
> 
> Review-Url: https://codereview.chromium.org/2750533006
> Cr-Commit-Position: refs/heads/master@{#460670}
> Committed:
https://chromium.googlesource.com/chromium/src/+/59b48ec0a88a1716bd4b39b2ac2d...

TBR=esprehn@chromium.org,aboxhall@chromium.org,haraken@chromium.org,dmazzoni@...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=680345,707218
==========

to

==========
Revert of Initial skeleton of Accessibility Object Model Phase 1 (patchset #9
id:160001 of https://codereview.chromium.org/2750533006/ )

Reason for revert:
major renderer on Canary see crbug.com/707218

Original issue's description:
> Initial skeleton of Accessibility Object Model Phase 1
> 
> Explainer: https://github.com/WICG/aom/blob/master/explainer.md
> Spec: https://wicg.github.io/aom/spec/
> 
> This change adds an accessibleNode getter on Element, and implements
> the role and label properties of AccessibleNode, including a LayoutTest
> of the supported functionality.
> 
> Properties on an AccessibleNode are stored in a map for efficiency
> since there are dozens of possible properties and few will need to be
> set on any one particular object.
> 
> In existing accessibility code, places where we previously retrieve an
> ARIA attribute are replaced with a new wrapper that first checks the
> ARIA attribute and then checks the equivalent AOM property.
> 
> Once this change lands it should be relatively straightforward to implement
> the rest of the properties of AccessibleNode and complete Phase 1.
> 
> BUG=680345
> 
> Review-Url: https://codereview.chromium.org/2750533006
> Cr-Commit-Position: refs/heads/master@{#460670}
> Committed:
https://chromium.googlesource.com/chromium/src/+/59b48ec0a88a1716bd4b39b2ac2d...

TBR=esprehn@chromium.org,aboxhall@chromium.org,haraken@chromium.org,dmazzoni@...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=680345,707218

Review-Url: https://codereview.chromium.org/2796553002
Cr-Commit-Position: refs/heads/master@{#461332}
Committed:
https://chromium.googlesource.com/chromium/src/+/71e44249f1bddfa5cfe90041b4b4...
==========

[commit-bot: I haz the power, 2017-04-01 23:33:23]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/71e44249f1bddfa5cfe90041b4b4...

[haraken, 2017-04-02 01:19:28]

LGTM to revert