Replace ICStub for array.length with hydrogen stub

src/ast.cc

Index: src/ast.cc
diff --git a/src/ast.cc b/src/ast.cc
index 712bfd1b9d4569ae901ed6f19eea8fa73f9b9330..a6f0243f9a6135f462dcbb8222a89718bd3e2a25 100644
--- a/src/ast.cc
+++ b/src/ast.cc
@@ -413,12 +413,9 @@ void Property::RecordTypeFeedback(TypeFeedbackOracle* oracle,
   is_monomorphic_ = oracle->LoadIsMonomorphicNormal(this);
   receiver_types_.Clear();
   if (key()->IsPropertyName()) {
-    ArrayLengthStub array_stub(Code::LOAD_IC);
     FunctionPrototypeStub proto_stub(Code::LOAD_IC);
     StringLengthStub string_stub(Code::LOAD_IC, false);
-    if (oracle->LoadIsStub(this, &array_stub)) {
-      is_array_length_ = true;
-    } else if (oracle->LoadIsStub(this, &string_stub)) {
+    if (oracle->LoadIsStub(this, &string_stub)) {
       is_string_length_ = true;
     } else if (oracle->LoadIsStub(this, &proto_stub)) {
       is_function_prototype_ = true;