Revert of DevTools: Fix console.log for arrays in some corner cases. (https://codereview.chromium.org/143263003/)

Reason for revert:
Console output got messy.

Original issue's description:
> DevTools: Fix console.log for arrays in some corner cases.
> 
> We didn't show array values defined on Array.prototype[], as well as non-index property names.
> 
> BUG=320632,163817
> R=pfeldman
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=165713

TBR=JulianMRaya@gmail.com,aandrey@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=320632,163817

Review URL: https://codereview.chromium.org/135973010

git-svn-id: svn://svn.chromium.org/blink/trunk@166302 bbb929c8-8fbe-4397-9dbb-9b2b20218538