Mozart: Rename ui:unittests to ui:apptests since that's what it is.

mojo/ui/BUILD.gn

 # Copyright 2015 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/public/mojo_application.gni")
 
 source_set("ui") {
   sources = [
     "base_view.cc",
     "base_view.h",
@@ skipping 70 matching lines @@
     "//mojo/common",
     "//mojo/gpu",
     "//mojo/public/cpp/bindings",
     "//mojo/services/gfx/composition/interfaces",
     "//mojo/services/ui/views/interfaces",
     "//mojo/skia",
     "//skia",
   ]
 }
 
-mojo_native_application("unittests") {
-  output_name = "ui_unittests"
+mojo_native_application("apptests") {
+  output_name = "ui_apptests"
 
   testonly = true
 
   sources = [
-    "gl_renderer_unittest.cc",
+    "gl_renderer_apptest.cc",
   ]
 
   deps = [
     ":gl",
     ":ui",
     "//base",
     "//mojo/application",
     "//mojo/application:test_support",
     "//mojo/gpu",
     "//mojo/public/cpp/bindings:callback",
     "//mojo/services/geometry/interfaces",
     "//mojo/services/gfx/composition/interfaces",
     "//testing/gtest",
   ]
 }