Revert of DevTools: Fix WebInspector.debuggerModel.debuggerPausedDetails checks in Tests.js (https://codereview.chromium.org/225183004/)

Reason for revert:
http://build.chromium.org/p/chromium.webkit/builders/Linux%20Tests/builds/35719

Original issue's description:
> DevTools: Fix WebInspector.debuggerModel.debuggerPausedDetails checks in Tests.js
> 
> TBR=pfeldman
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=170838

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

Review URL: https://codereview.chromium.org/225513002

git-svn-id: svn://svn.chromium.org/blink/trunk@170843 bbb929c8-8fbe-4397-9dbb-9b2b20218538