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

mojo/services/content_handler/public/interfaces/BUILD.gn

Index: mojo/services/content_handler/public/interfaces/BUILD.gn
diff --git a/mojo/services/content_handler/public/interfaces/BUILD.gn b/mojo/services/content_handler/public/interfaces/BUILD.gn
deleted file mode 100644
index 5016c6555d74bd1e4ee79d2698a1db88313a75eb..0000000000000000000000000000000000000000
--- a/mojo/services/content_handler/public/interfaces/BUILD.gn
+++ /dev/null
@@ -1,26 +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.
-
-import("../../../mojo_sdk_root.gni")
-import("$mojo_sdk_root/mojo/public/tools/bindings/mojom.gni")
-
-mojom("interfaces") {
-  sources = [
-    "content_handler.mojom",
-  ]
-
-  import_dirs = [ get_path_info("../../../", "abspath") ]
-
-  if (defined(network_service_root)) {
-    import_dirs += [ network_service_root ]
-  } else {
-    network_service_root = "../../.."
-  }
-
-  deps = [
-    "$network_service_root/network/public/interfaces",
-  ]
-
-  mojo_sdk_deps = [ "mojo/public/interfaces/application" ]
-}