Changed computation of func.caller to skip some built-in functions.

Changed computation of func.caller to skip some built-in functions. 
Now skips built-in functions called from other built-in functions, 
so only the initally called built-in function is exposed.

Committed: http://code.google.com/p/v8/source/detail?r=9018

[William Hesse, 2011-08-25 13:29:48]

LGTM.

http://codereview.chromium.org/7740021/diff/1/src/accessors.cc
File src/accessors.cc (right):

http://codereview.chromium.org/7740021/diff/1/src/accessors.cc#newcode752
src/accessors.cc:752: potential_caller != NULL && potential_caller->IsBuiltin();
I think this is clearer as a while loop, or anything that puts the assignments
to potential_caller and to caller in the correct order (the body and iteration
step).

[Lasse Reichstein, 2011-08-25 13:34:11]

http://codereview.chromium.org/7740021/diff/1/src/accessors.cc
File src/accessors.cc (right):

http://codereview.chromium.org/7740021/diff/1/src/accessors.cc#newcode752
src/accessors.cc:752: potential_caller != NULL && potential_caller->IsBuiltin();
On 2011/08/25 13:29:48, William Hesse wrote:
> I think this is clearer as a while loop, or anything that puts the assignments
> to potential_caller and to caller in the correct order (the body and iteration
> step).

Done.