Add remoting and PPAPI tests to GN build

remoting/remoting_locales.gni

Index: remoting/remoting_locales.gni
diff --git a/remoting/remoting_locales.gni b/remoting/remoting_locales.gni
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+# 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.
+
+webapp_locale_dir = "$root_gen_dir/remoting/webapp/_locales"
+
+# See also remoting_locales_with_underscores below.
+remoting_locales = [
+  "am",
+  "ar",
+  "bg",
+  "bn",
+  "ca",
+  "cs",
+  "da",
+  "de",
+  "el",
+  "en",
+  "en-GB",
+  "es",
+  "es-419",
+  "et",
+  "fa",
+  "fake-bidi",
+  "fi",
+  "fil",
+  "fr",
+  "gu",
+  "he",
+  "hi",
+  "hr",
+  "hu",
+  "id",
+  "it",
+  "ja",
+  "kn",
+  "ko",
+  "lt",
+  "lv",
+  "ml",
+  "mr",
+  "ms",
+  "nb",
+  "nl",
+  "pl",
+  "pt-BR",
+  "pt-PT",
+  "ro",
+  "ru",
+  "sk",
+  "sl",
+  "sr",
+  "sv",
+  "sw",
+  "ta",
+  "te",
+  "th",
+  "tr",
+  "uk",
+  "vi",
+  "zh-CN",
+  "zh-TW",
+]
+
+# Some locales have hyphens in the names but for some uses underscores are
+# needed.
+remoting_locales_with_underscores = remoting_locales
+remoting_locales_with_underscores -= [
+  "en-GB",
+  "es-419",
+  "fake-bidi",
+  "pt-BR",
+  "pt-PT",
+  "zh-CN",
+  "zh-TW",
+]
+remoting_locales_with_underscores += [
+  "en_GB",
+  "es_419",
+  "fake_bidi",
+  "pt_BR",
+  "pt_PT",
+  "zh_CN",
+  "zh_TW",
+]
+
+if (is_chromeos) {
+  remoting_locales += [ "en-US" ]
+  remoting_locales_with_underscores += [ "en_US" ]
+}
+
+messages_locales = remoting_locales_with_underscores
+if (!is_chromeos) {
+  # The messages output includes a separate one for en-US that the pak ones
+  # don't have. We don't need to do this on ChromeOS since en_US is in the
+  # locales list be default there.
+  messages_locales += [ "en_US" ]
+}
+
+# The list of .json files generated by remoting_strings.grd.
+remoting_webapp_locale_files =
+    process_file_template(
+        messages_locales,
+        [ "remoting/webapp/_locales/{{source_name_part}}/messages.json" ])