[ios] Adds JS resources for various features.

ios/chrome/browser/ui/contextual_search/BUILD.gn

Index: ios/chrome/browser/ui/contextual_search/BUILD.gn
diff --git a/ios/chrome/browser/ui/contextual_search/BUILD.gn b/ios/chrome/browser/ui/contextual_search/BUILD.gn
index 3ec61b2d015309c2d51495e0f73104fce94049ae..40e833966809b38ad0b9beabbb9496aa8c6344b3 100644
--- a/ios/chrome/browser/ui/contextual_search/BUILD.gn
+++ b/ios/chrome/browser/ui/contextual_search/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")
+
 bundle_data("resources") {
   sources = [
     "resources/expand_less.png",
@@ -12,3 +14,19 @@ bundle_data("resources") {
     "{{bundle_resources_dir}}/{{source_file_part}}",
   ]
 }
+
+js_compile_unchecked("injected_js") {
+  sources = [
+    "resources/contextualsearch.js",
+  ]
+}
+
+bundle_data("resources_unit_tests") {
+  testonly = true
+  sources = [
+    "resources/contextualsearch_unittest.js",
+  ]
+  outputs = [
+    "{{bundle_resources_dir}}/{{source_file_part}}",
+  ]
+}