Fix box-shadow painting for fieldset with legend, background, and border-radius

Fix box-shadow painting for fieldset with legend, background, and border-radius

This regressed since https://codereview.chromium.org/2464053003
which separated box-shadow painting from background painting, but
missed modification to FieldsetPainter about box-shadow/background
painting.

BUG=713331
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2836673002
Cr-Commit-Position: refs/heads/master@{#466441}
TBR=wangxianzhu@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2834583005
Cr-Commit-Position: refs/branch-heads/3071@{#133}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed: https://chromium.googlesource.com/chromium/src/+/6fdc7c8a7d3dca558b11a7a0c23cef196d63ef9b

[Xianzhu, 2017-04-21 22:45:11]

The CQ bit was checked by wangxianzhu@chromium.org

[commit-bot: I haz the power, 2017-04-21 22:45:38]

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, 2017-04-21 22:47:01]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1492814711760210, "parent_rev":
"f7532ab236779b2132a994c00c36a2227db58c4c", "commit_rev":
"6fdc7c8a7d3dca558b11a7a0c23cef196d63ef9b"}

[commit-bot: I haz the power, 2017-04-21 22:47:10]

Description was changed from

==========
Fix box-shadow painting for fieldset with legend, background, and border-radius

This regressed since https://codereview.chromium.org/2464053003
which separated box-shadow painting from background painting, but
missed modification to FieldsetPainter about box-shadow/background
painting.

BUG=713331
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2836673002
Cr-Commit-Position: refs/heads/master@{#466441}
TBR=wangxianzhu@chromium.org
NOTRY=true
NOPRESUBMIT=true
==========

to

==========
Fix box-shadow painting for fieldset with legend, background, and border-radius

This regressed since https://codereview.chromium.org/2464053003
which separated box-shadow painting from background painting, but
missed modification to FieldsetPainter about box-shadow/background
painting.

BUG=713331
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2836673002
Cr-Commit-Position: refs/heads/master@{#466441}
TBR=wangxianzhu@chromium.org
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2834583005
Cr-Commit-Position: refs/branch-heads/3071@{#133}
Cr-Branched-From:
a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}
Committed:
https://chromium.googlesource.com/chromium/src/+/6fdc7c8a7d3dca558b11a7a0c23c...
==========

[commit-bot: I haz the power, 2017-04-21 22:47:11]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/6fdc7c8a7d3dca558b11a7a0c23c...