Content is cropped and shifts to the left in RTL iFrames with scrollbars

Patch revert "Place inner frame scrollbars on the left side,
if indicated by the frame-level" or r169180 [1], that has caused
layout problems on overflown RTL contents.

Patch marks the existing affected tests as NeedsManualRebaseline
in order to get results for all platforms from the bots, and perform
rebaselines accordingly. Once this is done, idea is to re-mark them
as flaky.

[1] https://codereview.chromium.org/150733002

TBR=a1.gomes@sisa.samsung.com
BUG=353111

Review URL: https://codereview.chromium.org/384763002

git-svn-id: svn://svn.chromium.org/blink/trunk@177872 bbb929c8-8fbe-4397-9dbb-9b2b20218538