Revert of DevTools: [regression] blue selection is truncated in Elements panel / non-wrap mode. (patchset #1 id:1 of https://codereview.chromium.org/717163002/)

Reason for revert:
A slight adjustment is needed prior to merging.

Original issue's description:
> DevTools: [regression] blue selection is truncated in Elements panel / non-wrap mode.
> 
> BUG=432502
> NOTRY=true
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=185207

TBR=apavlov@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=432502

Review URL: https://codereview.chromium.org/734963003

git-svn-id: svn://svn.chromium.org/blink/trunk@185509 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: [regression] blue selection is truncated in Elements panel / non-wrap mode.

R=apavlov
BUG=432502
NOTRY=true

Review URL: https://codereview.chromium.org/737713002

git-svn-id: svn://svn.chromium.org/blink/trunk@185510 bbb929c8-8fbe-4397-9dbb-9b2b20218538