[interpreter] Add constant_pool() to BytecodeArray.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index d335ec4439a9c5f752737553d3b4b78ec81f0164..abe7c088574ff4ddce3346a69e112edd60f7f061 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -1477,6 +1477,8 @@ HeapObjectContents HeapObject::ContentType() {
   } else if (type == JS_FUNCTION_TYPE) {
     return HeapObjectContents::kMixedValues;
 #endif
+  } else if (type == BYTECODE_ARRAY_TYPE) {
+    return HeapObjectContents::kMixedValues;
   } else if (type >= FIRST_FIXED_TYPED_ARRAY_TYPE &&
              type <= LAST_FIXED_TYPED_ARRAY_TYPE) {
     return HeapObjectContents::kMixedValues;
@@ -4028,6 +4030,11 @@ Address ByteArray::GetDataStartAddress() {
 }
 
 
+void BytecodeArray::BytecodeArrayIterateBody(ObjectVisitor* v) {
+  IteratePointer(v, kConstantPoolOffset);
+}
+
+
 byte BytecodeArray::get(int index) {
   DCHECK(index >= 0 && index < this->length());
   return READ_BYTE_FIELD(this, kHeaderSize + index * kCharSize);
@@ -4064,6 +4071,9 @@ int BytecodeArray::parameter_count() const {
 }
 
 
+ACCESSORS(BytecodeArray, constant_pool, FixedArray, kConstantPoolOffset)
+
+
 Address BytecodeArray::GetFirstBytecodeAddress() {
   return reinterpret_cast<Address>(this) - kHeapObjectTag + kHeaderSize;
 }