[Interpreter] Refactor bytecode generator test suite.

test/cctest/interpreter/bytecode_expectations/IllegalRedeclaration.golden

Index: test/cctest/interpreter/bytecode_expectations/IllegalRedeclaration.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/IllegalRedeclaration.golden b/test/cctest/interpreter/bytecode_expectations/IllegalRedeclaration.golden
new file mode 100644
index 0000000000000000000000000000000000000000..df669aa945ee8442d8988a97371c24814e48ed52
--- /dev/null
+++ b/test/cctest/interpreter/bytecode_expectations/IllegalRedeclaration.golden
@@ -0,0 +1,32 @@
+#
+# Autogenerated by generate-bytecode-expectations.
+#
+
+---
+pool type: mixed
+execute: yes
+wrap: yes
+legacy const: yes
+
+---
+snippet: "
+  const a = 1; { var a = 2; }
+"
+frame size: 3
+parameter count: 1
+bytecode array length: 14
+bytecodes: [
+  B(LdaConstant), U8(0),
+  B(Star), R(1),
+  B(LdaConstant), U8(1),
+  B(Star), R(2),
+  B(CallRuntime), U16(Runtime::kNewSyntaxError), R(1), U8(2),
+  B(Throw),
+]
+constant pool: [
+  kInstanceTypeDontCare,
+  InstanceType::ONE_BYTE_INTERNALIZED_STRING_TYPE,
+]
+handlers: [
+]
+