Wrap ClassLiterals in DoExpressions instead of giving them BlockScopes.

src/interpreter/bytecode-generator.cc

Index: src/interpreter/bytecode-generator.cc
diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
index 6c51499740581ec24bd49806ee881bdf76d08d6b..42475f51e050827dcd9679a49173b04a83233318 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -1301,18 +1301,6 @@ void BytecodeGenerator::VisitFunctionLiteral(FunctionLiteral* expr) {
 }
 
 void BytecodeGenerator::VisitClassLiteral(ClassLiteral* expr) {
-  if (expr->scope()->ContextLocalCount() > 0) {
-    VisitNewLocalBlockContext(expr->scope());
-    ContextScope scope(this, expr->scope());
-    VisitDeclarations(expr->scope()->declarations());
-    VisitClassLiteralContents(expr);
-  } else {
-    VisitDeclarations(expr->scope()->declarations());
-    VisitClassLiteralContents(expr);
-  }
-}
-
-void BytecodeGenerator::VisitClassLiteralContents(ClassLiteral* expr) {
   VisitClassLiteralForRuntimeDefinition(expr);
 
   // Load the "prototype" from the constructor.