Add JS type checking for intervention-internals tests.

Bug: 1000989
Change-Id: I4ac4ab15f50e1cdd3decee13fbc2630875561ace
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2609848
Commit-Queue: dpapad <dpapad@chromium.org>
Auto-Submit: dpapad <dpapad@chromium.org>
Reviewed-by: John Lee <johntlee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#840545}

chrome/test/data/webui/BUILD.gn

@@ -543,12 +543,14 @@ group("closure_compile") {
 js_type_check("closure_compile_local") {
   is_polymer3 = true
   closure_flags = default_closure_args + [
+                    "browser_resolver_prefix_replacements=\"chrome://interventions-internals/=../../chrome/browser/resources/interventions-internals/\"",
                     "js_module_root=../../chrome/test/data/webui/",
                     "js_module_root=./gen/chrome/test/data/webui/",
                   ]
   deps = [
     ":chai_assert",
     ":fake_chrome_event.m",
+    ":interventions_internals_test",
     ":mock_timer.m",
     ":test_browser_proxy.m",
     ":test_plural_string_proxy",
@@ -556,6 +558,17 @@ js_type_check("closure_compile_local") {
   ]
 }
 
+js_library("interventions_internals_test") {
+  deps = [
+    ":chai_assert",
+    ":test_browser_proxy.m",
+    "//chrome/browser/resources/interventions_internals:index",
+    "//ui/webui/resources/js:promise_resolver.m",
+    "//ui/webui/resources/js:util.m",
+  ]
+  externs_list = [ "$externs_path/mocha-2.5.js" ]
+}
+
 js_library("fake_chrome_event.m") {
   sources = [ "$root_gen_dir/chrome/test/data/webui/fake_chrome_event.m.js" ]
   deps = [ ":chai_assert" ]