Revert of Oilpan: Move more code of RenderObject destructors to destroy(). (patchset #1 of https://codereview.chromium.org/459353002/)

Reason for revert:
Caused crashes in ImageQualityController::highQualityRepaintTimerFired().


Original issue's description:
> Oilpan: Move more code of RenderObject destructors to destroy().
> 
> Like [1] and [2]. We should do it in general.
> 
> [1] http://src.chromium.org/viewvc/blink?view=revision&revision=180023
> [2] http://src.chromium.org/viewvc/blink?view=revision&revision=180029
> 
> BUG=398342
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=180046

TBR=oilpan-reviews@chromium.org,haraken@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=398342

Review URL: https://codereview.chromium.org/478923005

git-svn-id: svn://svn.chromium.org/blink/trunk@180424 bbb929c8-8fbe-4397-9dbb-9b2b20218538