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

tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.h

Index: tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.h
diff --git a/tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.h b/tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.h
deleted file mode 100644
index b362ec921b5c9ff97f05666124afad954b0db5e0..0000000000000000000000000000000000000000
--- a/tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.h
+++ /dev/null
@@ -1,29 +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 CLASS_MULTIPLE_TRACE_BASES_H_
-#define CLASS_MULTIPLE_TRACE_BASES_H_
-
-#include "heap/stubs.h"
-
-namespace blink {
-
-class Base : public GarbageCollected<Base> {
-public:
-    virtual void trace(Visitor*);
-};
-
-class Mixin : public GarbageCollectedMixin {
-public:
-    void trace(Visitor*);
-};
-
-class Derived : public Base, public Mixin {
-    USING_GARBAGE_COLLECTED_MIXIN(HeapObject);
-    // Requires trace method.
-};
-
-}
-
-#endif