[Layout API] Use API shim in LayoutObjectTest

[Layout API] Use API shim in LayoutObjectTest

As this test resides in core/layout/ and is directly testing the
layout object itself, there's no particular reason to rewrite it to
route everything through the block layout API. The only reason it would
come up is that it relies on Document::layoutView(), which is being
replaced in other code with Document::layoutViewItem().

Instead, I'm going to poke through the API and allow this privileged
code to access the underlying layout object.

There are no functional changes.

BUG=499321
Committed: https://crrev.com/fc379556cd1f1cafb51f1ddb86bf34255e9c526f
Cr-Commit-Position: refs/heads/master@{#403934}

[pilgrim_google, 2016-07-06 17:14:33]

pilgrim@chromium.org changed reviewers:
+ eae@chromium.org, jsbell@chromium.org, schenney@chromium.org

[eae, 2016-07-06 17:23:16]

LGTM

[eae, 2016-07-06 17:23:26]

The CQ bit was checked by eae@chromium.org

[commit-bot: I haz the power, 2016-07-06 17:23:47]

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, 2016-07-06 18:27:07]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-07-06 18:31:14]

Description was changed from

==========
[Layout API] Use API shim in LayoutObjectTest

As this test resides in core/layout/ and is directly testing the
layout object itself, there's no particular reason to rewrite it to
route everything through the block layout API. The only reason it would
come up is that it relies on Document::layoutView(), which is being
replaced in other code with Document::layoutViewItem().

Instead, I'm going to poke through the API and allow this privileged
code to access the underlying layout object.

There are no functional changes.

BUG=499321
==========

to

==========
[Layout API] Use API shim in LayoutObjectTest

As this test resides in core/layout/ and is directly testing the
layout object itself, there's no particular reason to rewrite it to
route everything through the block layout API. The only reason it would
come up is that it relies on Document::layoutView(), which is being
replaced in other code with Document::layoutViewItem().

Instead, I'm going to poke through the API and allow this privileged
code to access the underlying layout object.

There are no functional changes.

BUG=499321

Committed: https://crrev.com/fc379556cd1f1cafb51f1ddb86bf34255e9c526f
Cr-Commit-Position: refs/heads/master@{#403934}
==========

[commit-bot: I haz the power, 2016-07-06 18:31:15]

Patchset 1 (id:??) landed as
https://crrev.com/fc379556cd1f1cafb51f1ddb86bf34255e9c526f
Cr-Commit-Position: refs/heads/master@{#403934}