Get rid of JSArray::Expand and friends

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 39891513caedde2ee0179e71d31a14af71040e70..7a82c941119df597708a57abc46739803dc9870d 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -6945,24 +6945,6 @@ int Map::SlackForArraySize(int old_size, int size_limit) {
 }
 
 
-void JSArray::EnsureSize(Handle<JSArray> array, int required_size) {
-  DCHECK(array->HasFastSmiOrObjectElements());
-  Handle<FixedArray> elts = handle(FixedArray::cast(array->elements()));
-  const int kArraySizeThatFitsComfortablyInNewSpace = 128;
-  if (elts->length() < required_size) {
-    // Doubling in size would be overkill, but leave some slack to avoid
-    // constantly growing.
-    Expand(array, required_size + (required_size >> 3));
-    // It's a performance benefit to keep a frequently used array in new-space.
-  } else if (!array->GetHeap()->new_space()->Contains(*elts) &&
-             required_size < kArraySizeThatFitsComfortablyInNewSpace) {
-    // Expand will allocate a new backing store in new space even if the size
-    // we asked for isn't larger than what we had before.
-    Expand(array, required_size);
-  }
-}
-
-
 void JSArray::set_length(Smi* length) {
   // Don't need a write barrier for a Smi.
   set_length(static_cast<Object*>(length), SKIP_WRITE_BARRIER);