[ios] Adds JS resources for various features.

ios/chrome/browser/web/BUILD.gn

Index: ios/chrome/browser/web/BUILD.gn
diff --git a/ios/chrome/browser/web/BUILD.gn b/ios/chrome/browser/web/BUILD.gn
index e76388b802088c874fcd53dfdbf7f4739a680ab4..61fd6d45b9855d487490d8b68cc419ff82aac874 100644
--- a/ios/chrome/browser/web/BUILD.gn
+++ b/ios/chrome/browser/web/BUILD.gn
@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//ios/web/js_compile.gni")
+
 source_set("web") {
   sources = [
     "dom_altering_lock.h",
@@ -130,3 +132,9 @@ bundle_data("resources") {
     "{{bundle_resources_dir}}/{{source_file_part}}",
   ]
 }
+
+js_compile_unchecked("injected_js") {
+  sources = [
+    "resources/print.js",
+  ]
+}