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

tools/clang/blink_gc_plugin/tests/base_requires_tracing.h

Index: tools/clang/blink_gc_plugin/tests/base_requires_tracing.h
diff --git a/tools/clang/blink_gc_plugin/tests/base_requires_tracing.h b/tools/clang/blink_gc_plugin/tests/base_requires_tracing.h
deleted file mode 100644
index 0205a08c6f213ad2c2dec70bfc24eae93ef400b9..0000000000000000000000000000000000000000
--- a/tools/clang/blink_gc_plugin/tests/base_requires_tracing.h
+++ /dev/null
@@ -1,37 +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 BASE_REQUIRES_TRACING_H_
-#define BASE_REQUIRES_TRACING_H_
-
-#include "heap/stubs.h"
-
-namespace blink {
-
-class A : public GarbageCollected<A> {
-public:
-    virtual void trace(Visitor*);
-};
-
-class B : public A {
-    // Does not need trace
-};
-
-class C : public B {
-public:
-    void trace(Visitor*);
-private:
-    Member<A> m_a;
-};
-
-class D : public C {
-public:
-    void trace(Visitor*);
-private:
-    Member<A> m_a;
-};
-
-}
-
-#endif