GN: Build rules and fixes for (almost) all mojo unittest targets

mojo/apps/js/BUILD.gn

 # 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/public/tools/bindings/mojom.gni")
-
-# GYP version: mojo/mojo_services.gypi:mojo_input_events_bindings
-mojom("input_events") {
+# GYP version: part of mojo/mojo_apps.gypi:mojo_js_lib
+source_set("js") {
+  deps = [
+    "//base",
+    "//gin",
+    "//mojo/apps/js/bindings",
+    "//mojo/apps/js/bindings/gl",
+    "//mojo/bindings/js",
+  ]
   sources = [
-    "input_events.mojom",
-  ]
-
-  deps = [
-    "//mojo/services/public/interfaces/geometry",
+    "mojo_runner_delegate.cc",
+    "mojo_runner_delegate.h",
   ]
 }