Move mojo/services/public/cpp TypeConverters to mojo/converters.

mojo/services/public/cpp/surfaces/tests/BUILD.gn

Index: mojo/services/public/cpp/surfaces/tests/BUILD.gn
diff --git a/mojo/services/public/cpp/surfaces/tests/BUILD.gn b/mojo/services/public/cpp/surfaces/tests/BUILD.gn
deleted file mode 100644
index 4211eff515d4a450507a9c8db89d7358cabdfea5..0000000000000000000000000000000000000000
--- a/mojo/services/public/cpp/surfaces/tests/BUILD.gn
+++ /dev/null
@@ -1,27 +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.
-
-# GYP version: mojo/mojo_services.gypi:mojo_surfaces_lib_unittests
-test("mojo_surfaces_lib_unittests") {
-  deps = [
-    "//base",
-    "//base/test:test_support",
-    "//cc",
-    "//cc/surfaces",
-    "//gpu",
-    "//mojo/edk/test:run_all_unittests",
-    "//mojo/environment:chromium",
-    "//mojo/services/public/cpp/geometry",
-    "//mojo/services/public/cpp/surfaces",
-    "//mojo/services/public/interfaces/geometry",
-    "//mojo/services/public/interfaces/surfaces",
-    "//skia",
-    "//testing/gtest",
-    "//ui/gfx",
-    "//ui/gfx/geometry",
-    "//ui/gfx:test_support",
-  ]
-
-  sources = [ "surface_unittest.cc" ]
-}