Move services code brought in from Mojo to live under //third_party.

mojo/services/content_handler/public/interfaces/content_handler.mojom

Index: mojo/services/content_handler/public/interfaces/content_handler.mojom
diff --git a/mojo/services/content_handler/public/interfaces/content_handler.mojom b/mojo/services/content_handler/public/interfaces/content_handler.mojom
deleted file mode 100644
index 39ddfeaa86e8ad4453d89d04b98f179a2793ea90..0000000000000000000000000000000000000000
--- a/mojo/services/content_handler/public/interfaces/content_handler.mojom
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 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.
-
-module mojo;
-
-import "mojo/public/interfaces/application/application.mojom";
-import "network/public/interfaces/url_loader.mojom";
-
-interface ContentHandler {
-  StartApplication(Application& application, URLResponse response);
-};