commit 7cbb3a079ea41d5b9d8b2b7cbe35971543b8d501
author sataya.m <sataya.m@samsung.com> Thu Jun 09 18:34:51 2016
committer Commit bot <commit-bot@chromium.org> Thu Jun 09 18:38:44 2016
tree 6725a36651d41526e15ece5d6be854eccf8a9c57
parent af4a59689fe719e5bf944a74cfdc7dcdcf147e8f

Stop propagating customscrollbar styles across iframe boundaries.

Stop propagating customscrollbar styles across iframe boundaries.
Currently we are applying the style of ownerLayoutObject style which is
throwing uneven behaviour while creatingcustom-scrollbar's for nested
IFrames. To Standardize this behaviour create custom-scrollbar if
IFrame body/document has ::-webkit-scrollbar selector else create
regular scrollbar.

BUG=531816

Review-Url: https://codereview.chromium.org/1340643004
Cr-Commit-Position: refs/heads/master@{#398951}