Fix usage of literal cloning for large double arrays.

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index c97ba3db2d59ed3458505b1f359f3e8432db8a34..0d7e0da1b56f5d1989c9c0b981fd3a0568a14ab3 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -2155,15 +2155,6 @@ void LoadIndexedInterceptorStub::GenerateAssembly(
 }
 
 // static
-bool FastCloneShallowObjectStub::IsSupported(ObjectLiteral* expr) {
-  // FastCloneShallowObjectStub doesn't copy elements, and object literals don't
-  // support copy-on-write (COW) elements for now.
-  // TODO(mvstanton): make object literals support COW elements.
-  return expr->fast_elements() && expr->has_shallow_properties() &&
-         expr->properties_count() <= kMaximumClonedProperties;
-}
-
-// static
 int FastCloneShallowObjectStub::PropertiesCount(int literal_length) {
   // This heuristic of setting empty literals to have
   // kInitialGlobalObjectUnusedPropertiesCount must remain in-sync with the