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

tools/clang/blink_gc_plugin/tests/stack_allocated.cpp

Index: tools/clang/blink_gc_plugin/tests/stack_allocated.cpp
diff --git a/tools/clang/blink_gc_plugin/tests/stack_allocated.cpp b/tools/clang/blink_gc_plugin/tests/stack_allocated.cpp
deleted file mode 100644
index 3c4e32162a408c1fa219cfcc9af38af4079fc025..0000000000000000000000000000000000000000
--- a/tools/clang/blink_gc_plugin/tests/stack_allocated.cpp
+++ /dev/null
@@ -1,23 +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 "stack_allocated.h"
-
-namespace blink {
-
-// Verify that anon namespaces are checked.
-namespace {
-
-class AnonStackObject : public StackObject {
-public:
-    HeapObject* m_obj;
-};
-
-}
-
-void HeapObject::trace(Visitor* visitor)
-{
-}
-
-}