Create a toplevel gfx/ dir and seed it with icon_util....

gfx/run_all_unittests.cc

Index: gfx/run_all_unittests.cc
===================================================================
--- gfx/run_all_unittests.cc	(revision 0)
+++ gfx/run_all_unittests.cc	(revision 0)
@@ -0,0 +1,9 @@
+// Copyright (c) 2010 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 "base/test/test_suite.h"
+
+int main(int argc, char** argv) {
+  return TestSuite(argc, argv).Run();
+}