They were used as the class of closure instances and as the type class of
function types.
All closure instances now have class _Closure and function types are represented
by a new class FunctionType extending AbstractType.
Fix issue 24567 and add regression test.
R=asiva@google.com, rmacnak@google.com
Review URL: https://codereview.chromium.org/1584223006 .
This also covers "closurization" of the .call method.
This relies on the fact that f.call === f if f is a closure.
This means that adding a simple getter to _FunctionImpl that
returns this is enough. No need for a separate dispatch.
This CL reverts the previous fix for issue 12602 (modulo the
additional tests).
BUG=dartbug.com/17473, dartbug.com/12602
R=iposva@google.com
Review URL: https://codereview.chromium.org//200193002
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@33736 260f80e4-7a28-3924-810f-c04153c831b5
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