Fix an assertion failure in the full code generator.

Fix an assertion failure in the full code generator.

We hit an assertion failure when we tried to record the AST ID of
the (shared) .arguments variable proxy more than once.  This was hit
when we had multiple calls to the same parameter in a function that
used the arguments object.  The fix is to not visit the subexpressions
of the (shared) property access expression.

BUG=1060

Review URL: http://codereview.chromium.org/6368007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@6404 ce2b1a6d-e550-0410-aec6-3dcde31c8c00