Add catalog unittests

mojo/services/catalog/store.cc

Index: mojo/services/catalog/store.cc
diff --git a/mojo/services/catalog/store.cc b/mojo/services/catalog/store.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3bce188877048df2b8e652c55536b100c25c144b
--- /dev/null
+++ b/mojo/services/catalog/store.cc
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+// Copyright 2016 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 "mojo/services/catalog/store.h"
+
+namespace catalog {
+
+// static
+const char Store::kNameKey[] = "name";
+// static
+const char Store::kQualifierKey[] = "process-group";
+// static
+const char Store::kDisplayNameKey[] = "display_name";
+// static
+const char Store::kCapabilitiesKey[] = "capabilities";
+
+}  // namespace catalog