Remove obsolete Factory::EnsureCanContainElements method.

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index acbaf3c862ce20b2bd0d9e7155af9a686b7cbc3f..142555275cb5ae58a41e9ca2bd4fffa4de94e212 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -1083,16 +1083,6 @@ void Factory::SetContent(Handle<JSArray> array,
 }
 
 
-void Factory::EnsureCanContainElements(Handle<JSArray> array,
-                                       Handle<FixedArrayBase> elements,
-                                       uint32_t length,
-                                       EnsureElementsMode mode) {
-  CALL_HEAP_FUNCTION_VOID(
-      isolate(),
-      array->EnsureCanContainElements(*elements, length, mode));
-}
-
-
 Handle<JSArrayBuffer> Factory::NewJSArrayBuffer() {
   Handle<JSFunction> array_buffer_fun(
       isolate()->context()->native_context()->array_buffer_fun());