Move object literal checking into checker classes

src/ppc/full-codegen-ppc.cc

Index: src/ppc/full-codegen-ppc.cc
diff --git a/src/ppc/full-codegen-ppc.cc b/src/ppc/full-codegen-ppc.cc
index 1a02f6958d9068a5a601b587261d4ef5154c006e..1cd30f97ff4378a571796750760c58a71f7dace3 100644
--- a/src/ppc/full-codegen-ppc.cc
+++ b/src/ppc/full-codegen-ppc.cc
@@ -1713,11 +1713,8 @@ void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
         __ LoadP(r3, MemOperand(sp));
         __ push(r3);
         VisitForStackValue(value);
-        if (property->emit_store()) {
-          __ CallRuntime(Runtime::kInternalSetPrototype, 2);
-        } else {
-          __ Drop(2);
-        }
+        DCHECK(property->emit_store());
+        __ CallRuntime(Runtime::kInternalSetPrototype, 2);
         break;
       case ObjectLiteral::Property::GETTER:
         accessor_table.lookup(key)->second->getter = value;
@@ -2528,8 +2525,9 @@ void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit) {
     switch (property->kind()) {
       case ObjectLiteral::Property::CONSTANT:
       case ObjectLiteral::Property::MATERIALIZED_LITERAL:
-      case ObjectLiteral::Property::COMPUTED:
       case ObjectLiteral::Property::PROTOTYPE:
+        UNREACHABLE();
+      case ObjectLiteral::Property::COMPUTED:
         __ CallRuntime(Runtime::kDefineClassMethod, 3);
         break;