patch from issue 218843002

ui/views/cull_set.cc

Index: ui/views/cull_set.cc
diff --git a/ui/views/cull_set.cc b/ui/views/cull_set.cc
new file mode 100644
index 0000000000000000000000000000000000000000..271bd063e84156311a4442cb573f5c86c18d31b0
--- /dev/null
+++ b/ui/views/cull_set.cc
@@ -0,0 +1,26 @@
+// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/views/cull_set.h"
+
+namespace views {
+
+CullSet::CullSet() {
+}
+
+CullSet::~CullSet() {
+}
+
+CullSet::CullSet(scoped_ptr<base::hash_set<intptr_t> > cull_set)
+    : cull_set_(cull_set.Pass()) {
+}
+
+bool CullSet::ShouldPaint(const View* view) const {
+  if (cull_set_)
+    return (cull_set_->count(reinterpret_cast<intptr_t>(view)) > 0);
+
+  return true;
+}
+
+}  // namespace views