Add creation of ServiceManager to Content (2nd try)

content/app/mojo/mojo_init.h

Index: content/app/mojo/mojo_init.h
diff --git a/content/app/mojo/mojo_init.h b/content/app/mojo/mojo_init.h
new file mode 100644
index 0000000000000000000000000000000000000000..59701aef0b0c1ab17574670b7fe6355099e324be
--- /dev/null
+++ b/content/app/mojo/mojo_init.h
@@ -0,0 +1,15 @@
+// Copyright (c) 2014 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.
+
+#ifndef CONTENT_APP_MOJO_MOJO_INIT_H_
+#define CONTENT_APP_MOJO_MOJO_INIT_H_
+
+namespace content {
+
+// Perform any necessary Mojo initialization.
+void InitializeMojo();
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_MOJO_MOJO_INIT_H_