[Interpreter] Generate valid FrameStates in the Bytecode Graph Builder.

src/interpreter/bytecode-array-iterator.h

Index: src/interpreter/bytecode-array-iterator.h
diff --git a/src/interpreter/bytecode-array-iterator.h b/src/interpreter/bytecode-array-iterator.h
index 31e237f09832b8083c46be3dd3825d220f945962..12bcd4f40281b67498e63bf247e618e742951745 100644
--- a/src/interpreter/bytecode-array-iterator.h
+++ b/src/interpreter/bytecode-array-iterator.h
@@ -20,6 +20,7 @@ class BytecodeArrayIterator {
   void Advance();
   bool done() const;
   Bytecode current_bytecode() const;
+  int current_bytecode_size() const;
   int current_offset() const { return bytecode_offset_; }
   const Handle<BytecodeArray>& bytecode_array() const {
     return bytecode_array_;