Revert "[Arguments] Merge (7442,7496] from bleeding_edge."

src/ic.cc

Index: src/ic.cc
diff --git a/src/ic.cc b/src/ic.cc
index dd2bb297b41c88b148ce7ad863d85706b7941e6f..501ec628f3a8faf9290fe372f0c33e81ec9f16e7 100644
--- a/src/ic.cc
+++ b/src/ic.cc
@@ -1143,16 +1143,6 @@ void LoadIC::UpdateCaches(LookupResult* lookup,
 MaybeObject* KeyedLoadIC::Load(State state,
                                Handle<Object> object,
                                Handle<Object> key) {
-  // Check for values that can be converted into a symbol.
-  // TODO(1295): Remove this code.
-  HandleScope scope(isolate());
-  if (key->IsHeapNumber() &&
-      isnan(HeapNumber::cast(*key)->value())) {
-    key = isolate()->factory()->nan_symbol();
-  } else if (key->IsUndefined()) {
-    key = isolate()->factory()->undefined_symbol();
-  }
-
   if (key->IsSymbol()) {
     Handle<String> name = Handle<String>::cast(key);