Add ash perftest on background blur filter.

ash/test/ash_perftests.cc

Index: ash/test/ash_perftests.cc
diff --git a/ash/test/ash_perftests.cc b/ash/test/ash_perftests.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a6a3e19e2f904fca7b364e7f764bbbf1352e8f20
--- /dev/null
+++ b/ash/test/ash_perftests.cc
@@ -0,0 +1,30 @@
+// Copyright 2017 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 "ash/test/ash_test_suite.h"
+#include "base/bind.h"
+#include "base/command_line.h"
+#include "base/test/launcher/unit_test_launcher.h"
+#include "mojo/edk/embedder/embedder.h"
+#include "ui/gl/gl_switches.h"
+
+namespace {
+
+int RunHelper(ash::test::AshTestSuite* test_suite) {
+  // In ash_perftests we want to use hardware GL. By adding this switch we can
+  // set |use_software_gl| to false in gl_surface_test_support.cc.
+  base::CommandLine::ForCurrentProcess()->AppendSwitch(
+      switches::kUseGpuInTests);
+  return test_suite->Run();
+}
+
+}  // namespace
+
+int main(int argc, char** argv) {
+  ash::test::AshTestSuite test_suite(argc, argv);
+
+  mojo::edk::Init();
+  return base::LaunchUnitTestsSerially(
+      argc, argv, base::Bind(&RunHelper, base::Unretained(&test_suite)));
+}