Refactor class declaration logic to the parser and runtime

src/asmjs/asm-wasm-builder.cc

Index: src/asmjs/asm-wasm-builder.cc
diff --git a/src/asmjs/asm-wasm-builder.cc b/src/asmjs/asm-wasm-builder.cc
index c4b5c02d12874d09498ecf9097e01f03adf75cd2..43ec842f25a9b4d17d9810d36d02b356f6e1ce80 100644
--- a/src/asmjs/asm-wasm-builder.cc
+++ b/src/asmjs/asm-wasm-builder.cc
@@ -1635,8 +1635,6 @@ class AsmWasmBuilderImpl : public AstVisitor {
     }
   }
 
-  void VisitClassLiteral(ClassLiteral* expr) override { UNREACHABLE(); }
-
   void VisitSpread(Spread* expr) override { UNREACHABLE(); }
 
   void VisitSuperPropertyReference(SuperPropertyReference* expr) override {