[Interpreter] Add support for parameter variables.

src/frames.h

Index: src/frames.h
diff --git a/src/frames.h b/src/frames.h
index fecaec6fb75121f4a1aae774875c9caa2dfb5315..05c0a3548918036457e46b0d16de4cd9403a57b7 100644
--- a/src/frames.h
+++ b/src/frames.h
@@ -174,6 +174,14 @@ class ConstructFrameConstants : public AllStatic {
 };
 
 
+class InterpreterFrameConstants : public AllStatic {
+ public:
+  // Register file pointer relative.
+  static const int kLastParamFromRegisterPointer =
+      StandardFrameConstants::kFixedFrameSize + kPointerSize;
+};
+
+
 // Abstract base class for all stack frames.
 class StackFrame BASE_EMBEDDED {
  public: