[ios Mojo] Integration test for Mojo WebUI.

ios/web/BUILD.gn

Index: ios/web/BUILD.gn
diff --git a/ios/web/BUILD.gn b/ios/web/BUILD.gn
index e77799d78ff3f3efde6f963328f64581b85f76e4..b5100c585b0779eebfa77cf7454e2f645a425311 100644
--- a/ios/web/BUILD.gn
+++ b/ios/web/BUILD.gn
@@ -472,9 +472,14 @@ test("ios_web_inttests") {
   deps = [
     ":test_support",
     ":web",
+    "test:mojo_bindings",
+    "test:packed_resources",
+    "test:resources",
     "//base/test:test_support",
+    "//ios/public/provider/web",
     "//mojo/edk/system",
     "//net:test_support",
+    "//services/shell/public/cpp",
     "//testing/gtest",
     "//ui/base:test_support",
   ]
@@ -482,6 +487,10 @@ test("ios_web_inttests") {
     "browser_state_web_view_partition_inttest.mm",
     "public/test/http_server_inttest.mm",
     "test/run_all_unittests.cc",
+    "webui/web_ui_mojo_inttest.mm",
+  ]
+  data = [
+    "$root_gen_dir/ios/web/test/resources.pak",
   ]
 }
 
@@ -537,6 +546,6 @@ grit("resources") {
   ]
   grit_flags = [
     "-E",
-    "root_out_dir=" + rebase_path(root_out_dir, root_build_dir),
+    "root_gen_dir=" + rebase_path(root_out_dir, root_build_dir),
   ]
 }