Blink GC plugin: improve handling of type dependent bases.

tools/clang/blink_gc_plugin/tests/templated_class_with_local_class_requires_trace.h

+// 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.
+
+#ifndef TEMPLATED_CLASS_WITH_LOCAL_CLASS_REQUIRES_TRACE_H
+#define TEMPLATED_CLASS_WITH_LOCAL_CLASS_REQUIRES_TRACE_H
+
+#include "heap/stubs.h"
+
+namespace blink {
+
+class NonHeapObject { };
+
+class HeapObject : public GarbageCollected<HeapObject> {
+public:
+    HeapObject() { }
+
+    void trace(Visitor*) { }
+};
+
+template<typename T>
+class TemplatedObject final
+    : public GarbageCollectedFinalized<TemplatedObject<T> > {
+public:
+    TemplatedObject(T*)
+    {
+    }
+
+    void trace(Visitor*);
+
+private:
+    class Local final : public GarbageCollected<Local> {
+    public:
+        void trace(Visitor* visitor)
+        {
+            visitor->trace(m_heapObject);
+            visitor->trace(m_object);
+        }
+    private:
+        Member<HeapObject> m_heapObject;
+        OwnPtr<HeapObject> m_object;
+    };
+
+    Member<Local> m_local;
+    Member<T> m_memberRef;
+    OwnPtr<T> m_ownRef;
+};
+
+} // namespace blink
+
+#endif // TEMPLATED_CLASS_WITH_LOCAL_CLASS_REQUIRES_TRACE_H
+