I do not agree with this change yet:
- We are introducing a new flag to the StackTraceFrameIterator and all its
parent classes just to disable an assert.
- Do we actually understand why the stackframe iterator cannot work when being called from a builtin (I assume that you are referring to C++ builtins in like ArrayShift)? I was under the assumption that the StackFrameIterator should be
able to handle all types of frames on the stack.


https://codereview.chromium.org/43693002/diff/200001/src/x64/macro-assembler-x64.cc
File src/x64/macro-assembler-x64.cc (right):

https://codereview.chromium.org/43693002/diff/200001/src/x64/macro-assembler-x64.cc#newcode4097
src/x64/macro-assembler-x64.cc:4097: addq(rsp, Immediate(2 *
kPointerSize));
Use Drop(2) instead.

https://codereview.chromium.org/43693002/

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