PreParser cleanup: no need to track with-ness of scopes.

PreParser cleanup: no need to track with-ness of scopes.

Historically, we used to track the "with-ness" of a scope differently; not
creating a with scope, but setting a property on the scope (see
https://codereview.chromium.org/5166006 ). For laziness decisions, checking the
with-ness should be unnecessary: the current scope is function scope, and if the
outer scope is global scope, there's surely no with scope in between.

R=ulan@chromium.org
BUG=

Committed: https://code.google.com/p/v8/source/detail?r=20189

[marja, 2014-03-24 11:44:40]

ulan, ptal

[ulan, 2014-03-24 11:50:02]

lgtm

[marja, 2014-03-24 12:16:14]

Committed patchset #2 manually as r20189 (presubmit successful).