DevTools: Show blackbox infobar on documents also.

Documents can contain scripts, so turn on blackboxing in this case also.

R=vsevik, pfeldman

Review URL: https://codereview.chromium.org/599433002

git-svn-id: svn://svn.chromium.org/blink/trunk@182489 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Revert of RenderBlock::layoutPositionedObjects should use setNeedsPositionedMovementLayout (patchset #1 id:1 of https://codereview.chromium.org/414123006/)

Reason for revert:
Reverting this change fixes stable blocking bug: https://crbug.com/413553

Original issue's description:
> RenderBlock::layoutPositionedObjects should use setNeedsPositionedMovementLayout
> 
> This CL swiches RenderBlock::layoutPositionedObjects from using setNeedsLayout
> to setNeedsPositionedMovementLayout, as indicated by the FIXME comment and
> associated bug. The test failure mentioned in the bug is no longer a problem.
> 
> BUG=350756
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=179289

TBR=leviw@chromium.org,dsinclair@chromium.org,jchaffraix@chromium.org,abarth@chromium.org
BUG=350756,413553

Review URL: https://codereview.chromium.org/598503002

git-svn-id: svn://svn.chromium.org/blink/trunk@182490 bbb929c8-8fbe-4397-9dbb-9b2b20218538