Bounding boxes in the accessibility tree should always be relative to a box.

Bounding boxes in the accessibility tree should always be relative to a box.

The accessibility tree stores bounding boxes relative to the nearest container,
which allows for efficient handling of transformations in the layout tree.
Previously we were allowing any box model object to be a container, but
this resulted in incorrect results for the static text child of an inline
element with position:relative. Fix this by requiring containers to be
boxes.

BUG=737130
Review-Url: https://codereview.chromium.org/2955303002
Cr-Commit-Position: refs/heads/master@{#483823}
Committed: https://chromium.googlesource.com/chromium/src/+/f3c32d8c2da3969d676bc6255224d779bda01ed2

[dmazzoni, 2017-06-28 06:58:00]

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

[commit-bot: I haz the power, 2017-06-28 06:58:10]

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, 2017-06-28 07:39:55]

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

[commit-bot: I haz the power, 2017-06-28 07:39:55]

Dry run: Try jobs failed on following builders:
  ios-simulator on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-simulator/bui...)

[dmazzoni, 2017-06-28 19:11:58]

dmazzoni@chromium.org changed reviewers:
+ aboxhall@chromium.org

[aboxhall, 2017-06-30 06:09:05]

lgtm

[dmazzoni, 2017-06-30 19:07:22]

The CQ bit was checked by dmazzoni@chromium.org

[commit-bot: I haz the power, 2017-06-30 19:07:40]

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, 2017-06-30 21:21:16]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498849642684150, "parent_rev":
"63b994a1d1026a4b992c74e10e1e7c826bb5f9ae", "commit_rev":
"b8f454295f19c341d659351f7842a085fc13feb4"}

[commit-bot: I haz the power, 2017-06-30 21:21:31]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498849642684150, "parent_rev":
"b44f896ea1f81f87f51be2d95e962bf21859ab0d", "commit_rev":
"60ecbf8ca700f53609abb17b29fa10192796e289"}

[commit-bot: I haz the power, 2017-06-30 21:21:46]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498849642684150, "parent_rev":
"82158f84f6dadefdb0d6169c67a072685fbbc77a", "commit_rev":
"f3c32d8c2da3969d676bc6255224d779bda01ed2"}

[commit-bot: I haz the power, 2017-06-30 21:21:58]

Description was changed from

==========
Bounding boxes in the accessibility tree should always be relative to a box.

The accessibility tree stores bounding boxes relative to the nearest container,
which allows for efficient handling of transformations in the layout tree.
Previously we were allowing any box model object to be a container, but
this resulted in incorrect results for the static text child of an inline
element with position:relative. Fix this by requiring containers to be
boxes.

BUG=737130
==========

to

==========
Bounding boxes in the accessibility tree should always be relative to a box.

The accessibility tree stores bounding boxes relative to the nearest container,
which allows for efficient handling of transformations in the layout tree.
Previously we were allowing any box model object to be a container, but
this resulted in incorrect results for the static text child of an inline
element with position:relative. Fix this by requiring containers to be
boxes.

BUG=737130

Review-Url: https://codereview.chromium.org/2955303002
Cr-Commit-Position: refs/heads/master@{#483823}
Committed:
https://chromium.googlesource.com/chromium/src/+/f3c32d8c2da3969d676bc6255224...
==========

[commit-bot: I haz the power, 2017-06-30 21:22:02]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/f3c32d8c2da3969d676bc6255224...