iOS: Add sync/driver resources to app bundle

Since //components/sync/driver:resources has been broken out of
//components/resources as a separate target and separate pak file, it
needs to be added back into the iOS app bundle.

This fixes the missing iOS dependencies from:
https://crrev.com/c/1864564

Bug: 1016465
Change-Id: I0274f5575fd02e0e344fc48619dd05cfda37e51e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1883119Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Peter Wen <wnwen@chromium.org>
Auto-Submit: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709957}

ios/chrome/app/resources/BUILD.gn

@@ -61,6 +61,7 @@ repack("repack_unscaled_resources") {
   visibility = [ ":packed_resources" ]
   sources = [
     "$root_gen_dir/components/components_resources.pak",
+    "$root_gen_dir/components/sync_driver_resources.pak",
     "$root_gen_dir/ios/chrome/ios_resources.pak",
     "$root_gen_dir/ios/web/ios_web_resources.pak",
     "$root_gen_dir/mojo/public/js/mojo_bindings_resources.pak",
@@ -70,6 +71,7 @@ repack("repack_unscaled_resources") {
   deps = [
     ":ios_resources",
     "//components/resources",
+    "//components/sync/driver:resources",
     "//ios/web:resources",
     "//mojo/public/js:resources",
     "//net:net_resources",