Introduce a special kind of frames for construct frames, e.g....

src/builtins.cc

Index: src/builtins.cc
===================================================================
--- src/builtins.cc	(revision 483)
+++ src/builtins.cc	(working copy)
@@ -94,33 +94,13 @@
   ASSERT(it.frame()->is_exit());
   it.Advance();
   StackFrame* frame = it.frame();
-  return frame->is_internal() &&
-      InternalFrame::cast(frame)->is_construct_trampoline();
+  return frame->is_construct();
 }
 
 
 // ----------------------------------------------------------------------------
 
 
-int Builtins::construct_call_pc_offset_ = 0;
-int Builtins::arguments_adaptor_call_pc_offset_ = 0;
-
-
-// Check if the builtin was called in a 'new' call.
-bool Builtins::IsConstructCall(Address pc) {
-  ASSERT(construct_call_pc_offset_ > 0);
-  int offset = pc - builtin(JSConstructCall)->address();
-  return offset == construct_call_pc_offset_;
-}
-
-
-bool Builtins::IsArgumentsAdaptorCall(Address pc) {
-  ASSERT(arguments_adaptor_call_pc_offset_ > 0);
-  int offset = pc - builtin(ArgumentsAdaptorTrampoline)->address();
-  return offset == arguments_adaptor_call_pc_offset_;
-}
-
-
 Handle<Code> Builtins::GetCode(JavaScript id, bool* resolved) {
   Code* code = Builtins::builtin(Builtins::Illegal);
   *resolved = false;