Make the empty browser_test work again after incremental linking broke it.

chrome/test/base/empty_browser_test.cc

Index: chrome/test/base/empty_browser_test.cc
===================================================================
--- chrome/test/base/empty_browser_test.cc	(revision 0)
+++ chrome/test/base/empty_browser_test.cc	(revision 0)
@@ -0,0 +1,10 @@
+// Copyright (c) 2012 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 "chrome/test/base/in_process_browser_test.h"
+
+// An empty test (it starts up and shuts down the browser as part of its
+// setup and teardown) used to prefetch all of the browser code into memory.
+IN_PROC_BROWSER_TEST_F(InProcessBrowserTest, Empty) {
+}