[iOS/GN] Define targets to application extensions resources.

ios/chrome/share_extension/BUILD.gn

Index: ios/chrome/share_extension/BUILD.gn
diff --git a/ios/chrome/share_extension/BUILD.gn b/ios/chrome/share_extension/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..148827185b647b5091b039a37be2fefce913522d
--- /dev/null
+++ b/ios/chrome/share_extension/BUILD.gn
@@ -0,0 +1,18 @@
+# Copyright 2016 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("//build/config/locales.gni")
+import("//ios/chrome/extension_repack.gni")
+
+group("resources") {
+  deps = [
+    "//ios/chrome/share_extension/strings",
+  ]
+}
+
+extension_repack_all_locales("packed_resources") {
+  extension = "share_extension"
+  input_locales = ios_packed_locales
+  output_locales = ios_packed_locales_as_mac_outputs
+}