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

tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.cpp

Index: tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.cpp
diff --git a/tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.cpp b/tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.cpp
deleted file mode 100644
index 4afc011c6bb47f231c160e7cc0a8c2d5fd475463..0000000000000000000000000000000000000000
--- a/tools/clang/blink_gc_plugin/tests/class_multiple_trace_bases.cpp
+++ /dev/null
@@ -1,15 +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.
-
-#include "class_multiple_trace_bases.h"
-
-namespace blink {
-
-void Base::trace(Visitor* visitor) { }
-
-void Mixin::trace(Visitor* visitor) { }
-
-// Missing: Derived::trace(visitor)
-
-}