[builtins] Construct builtin frame in String/Number ctors

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index e25bd646b0116bc99b80e92d9a4f3e7e1e7c9b35..0cdd8fd00f7bc5584bfe0b2526f3b8468b0ca827 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -1720,6 +1720,9 @@ const Operand& rt = Operand(zero_reg), BranchDelaySlot bd = PROTECT
   void EnterFrame(StackFrame::Type type, bool load_constant_pool_pointer_reg);
   void LeaveFrame(StackFrame::Type type);
 
+  void EnterBuiltinFrame(Register context, Register target, Register argc);
+  void LeaveBuiltinFrame(Register context, Register target, Register argc);
+
   // Expects object in a0 and returns map with validated enum cache
   // in a0.  Assumes that any other register can be used as a scratch.
   void CheckEnumCache(Label* call_runtime);