Create NaCl specific frame inner detection function.

GDB compares frame pointers to detect incorrect frame.  We have to
create NaCl specific function that ignores base address.  This is
need since PNaCl erases base address from stack frames.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3600
TEST= none

Review URL: https://codereview.chromium.org/22590004
1 file changed