[Interpreter] Adds support for const/let variables to interpreter.

test/unittests/interpreter/bytecode-array-builder-unittest.cc

Index: test/unittests/interpreter/bytecode-array-builder-unittest.cc
diff --git a/test/unittests/interpreter/bytecode-array-builder-unittest.cc b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
index e2ccce260891ad182eef4f319cf7454d94ff5825..a2f8fb51c0f33fa236e87cd1fdd16fe5b585f61f 100644
--- a/test/unittests/interpreter/bytecode-array-builder-unittest.cc
+++ b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
@@ -166,7 +166,9 @@ TEST_F(BytecodeArrayBuilderTest, AllBytecodesGenerated) {
   // Short jumps with Imm8 operands
   builder.Jump(&start)
       .JumpIfNull(&start)
-      .JumpIfUndefined(&start);
+      .JumpIfUndefined(&start)
+      .JumpIfHole(&start)
+      .JumpIfNotHole(&start);
   // Perform an operation that returns boolean value to
   // generate JumpIfTrue/False
   builder.CompareOperation(Token::Value::EQ, reg, Strength::WEAK)