Get rid of JSArray::Expand and friends

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 1554a0970656eec5d19c29296132054142f2e24d..aea8c3ba92464212fa57ab705134e90cfa12cb5b 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -11903,12 +11903,6 @@ void JSArray::Initialize(Handle<JSArray> array, int capacity, int length) {
 }
 
 
-void JSArray::Expand(Handle<JSArray> array, int required_size) {
-  ElementsAccessor* accessor = array->GetElementsAccessor();
-  accessor->SetCapacityAndLength(array, required_size, required_size);
-}
-
-
 // Returns false if the passed-in index is marked non-configurable, which will
 // cause the truncation operation to halt, and thus no further old values need
 // be collected.