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

tools/clang/blink_gc_plugin/tests/traceimpl_overloaded.cpp

Index: tools/clang/blink_gc_plugin/tests/traceimpl_overloaded.cpp
diff --git a/tools/clang/blink_gc_plugin/tests/traceimpl_overloaded.cpp b/tools/clang/blink_gc_plugin/tests/traceimpl_overloaded.cpp
deleted file mode 100644
index 02d485835187d56e27c108228a7f63548dc5d583..0000000000000000000000000000000000000000
--- a/tools/clang/blink_gc_plugin/tests/traceimpl_overloaded.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2015 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 "traceimpl_overloaded.h"
-
-namespace blink {
-
-void ExternBase::trace(Visitor* visitor) {
-  traceImpl(visitor);
-}
-
-void ExternBase::trace(InlinedGlobalMarkingVisitor visitor) {
-  traceImpl(visitor);
-}
-
-template <typename VisitorDispatcher>
-inline void ExternBase::traceImpl(VisitorDispatcher visitor) {
-  visitor->trace(x_base_);
-}
-
-void ExternDerived::trace(Visitor* visitor) {
-  traceImpl(visitor);
-}
-
-void ExternDerived::trace(InlinedGlobalMarkingVisitor visitor) {
-  traceImpl(visitor);
-}
-
-template <typename VisitorDispatcher>
-inline void ExternDerived::traceImpl(VisitorDispatcher visitor) {
-  visitor->trace(x_derived_);
-  ExternBase::trace(visitor);
-}
-
-}