[Interpreter] Add wide varients of bytecodes with feedback and constant pool indexes.

src/interpreter/interpreter.h

Index: src/interpreter/interpreter.h
diff --git a/src/interpreter/interpreter.h b/src/interpreter/interpreter.h
index 29a3c69638b423c4bd0a34fb12cffc186915b527..560aba19d70296f504f563e0cb128b49e2f479a6 100644
--- a/src/interpreter/interpreter.h
+++ b/src/interpreter/interpreter.h
@@ -63,6 +63,9 @@ class Interpreter {
   void DoCompareOp(Token::Value compare_op,
                    compiler::InterpreterAssembler* assembler);
 
+  // Generates code to load a constant from the constant pool.
+  void DoLoadConstant(compiler::InterpreterAssembler* assembler);
+
   // Generates code to perform a global load via |ic|.
   void DoLoadGlobal(Callable ic, compiler::InterpreterAssembler* assembler);