Remove tools/clang (this will break things temporarily).

tools/clang/blink_gc_plugin/tests/fields_require_tracing.h

Index: tools/clang/blink_gc_plugin/tests/fields_require_tracing.h
diff --git a/tools/clang/blink_gc_plugin/tests/fields_require_tracing.h b/tools/clang/blink_gc_plugin/tests/fields_require_tracing.h
deleted file mode 100644
index 60caa68042b4110a5d9e8d20cff0aa97a7813531..0000000000000000000000000000000000000000
--- a/tools/clang/blink_gc_plugin/tests/fields_require_tracing.h
+++ /dev/null
@@ -1,46 +0,0 @@
-// 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 FIELDS_REQUIRE_TRACING_H_
-#define FIELDS_REQUIRE_TRACING_H_
-
-#include "heap/stubs.h"
-
-namespace blink {
-
-class HeapObject;
-class PartObject;
-
-class PartBObject {
-    DISALLOW_ALLOCATION();
-public:
-    void trace(Visitor*);
-private:
-    HeapHashSet<PartBObject> m_set;
-    HeapVector<PartBObject> m_vector;
-};
-
-class PartObject {
-    DISALLOW_ALLOCATION();
-public:
-    void trace(Visitor*);
-private:
-    Member<HeapObject> m_obj1;
-    Member<HeapObject> m_obj2;
-    Member<HeapObject> m_obj3;
-
-    HeapVector<PartBObject> m_parts;
-};
-
-class HeapObject : public GarbageCollected<HeapObject> {
-public:
-    void trace(Visitor*);
-private:
-    PartObject m_part;
-    Member<HeapObject> m_obj;
-};
-
-}
-
-#endif