Introduce the image_decoder service

services/image_decoder/public/cpp/constants.cc

Index: services/image_decoder/public/cpp/constants.cc
diff --git a/services/image_decoder/public/cpp/constants.cc b/services/image_decoder/public/cpp/constants.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e87e47bba579fe90cc4b0959d770da76fb4c5db4
--- /dev/null
+++ b/services/image_decoder/public/cpp/constants.cc
@@ -0,0 +1,11 @@
+// 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 "services/image_decoder/public/cpp/constants.h"
+
+namespace image_decoder {
+
+const char kServiceName[] = "service:image_decoder";
+
+}  // namespace image_decoder