Check that classes with non-trivial destructors have finalization support.

tools/clang/blink_gc_plugin/tests/class_requires_finalization_field.cpp

Index: tools/clang/blink_gc_plugin/tests/class_requires_finalization_field.cpp
diff --git a/tools/clang/blink_gc_plugin/tests/class_requires_finalization_field.cpp b/tools/clang/blink_gc_plugin/tests/class_requires_finalization_field.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..8667f88ec84fdc32224dc5f99cd33ddec88a2a34
--- /dev/null
+++ b/tools/clang/blink_gc_plugin/tests/class_requires_finalization_field.cpp
@@ -0,0 +1,34 @@
+// Copyright 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 "class_requires_finalization_field.h"
+
+namespace WebCore {
+
+void NeedsFinalizer::trace(Visitor* visitor)
+{
+    visitor->trace(m_as);
+    A::trace(visitor);
+}
+
+void AlsoNeedsFinalizer::trace(Visitor* visitor)
+{
+    visitor->trace(m_bs);
+    A::trace(visitor);
+}
+
+void DoesNotNeedFinalizer::trace(Visitor* visitor)
+{
+    visitor->trace(m_bs);
+    A::trace(visitor);
+}
+
+void AlsoDoesNotNeedFinalizer::trace(Visitor* visitor)
+{
+    visitor->trace(m_as);
+    visitor->trace(m_cs);
+    A::trace(visitor);
+}
+
+}