Remove Oilpan-specific clearing of DOMWindow during document detach.

Keep the observable lifetime of this object equal to what it is non-Oilpan.

R=haraken
BUG=420515

Review URL: https://codereview.chromium.org/883393002

git-svn-id: svn://svn.chromium.org/blink/trunk@189240 bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed
tree: 7a746ed01098f5f3eb12e4fabe2356747f0444db
  1. third_party/