Move web_js_test.h upstream

ios/web/BUILD.gn

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//ios/build/config.gni")
 import("//ios/web/js_compile.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 
 source_set("web") {
@@ skipping 300 matching lines @@
     "public/test/web_view_interaction_test_util.h",
     "public/test/web_view_interaction_test_util.mm",
   ]
 }
 
 source_set("test_support") {
   testonly = true
 
   deps = [
     ":web",
+    "//base",
     "//base/test:test_support",
     "//ios/testing:ocmock_support",
     "//ios/third_party/gcdwebserver",
     "//ios/web/test:mojo_bindings",
     "//net:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/base:base",
   ]
@@ skipping 30 matching lines @@
     "public/test/test_redirect_observer.h",
     "public/test/test_redirect_observer.mm",
     "public/test/test_web_client.h",
     "public/test/test_web_client.mm",
     "public/test/test_web_state.h",
     "public/test/test_web_state.mm",
     "public/test/test_web_thread.h",
     "public/test/test_web_thread_bundle.h",
     "public/test/test_web_view_content_view.h",
     "public/test/test_web_view_content_view.mm",
+    "public/test/web_js_test.h",
     "public/test/web_test.h",
     "public/test/web_test.mm",
     "public/test/web_test_suite.h",
     "public/test/web_test_with_web_state.h",
     "public/test/web_test_with_web_state.mm",
     "test/crw_fake_web_controller_observer.h",
     "test/crw_fake_web_controller_observer.mm",
     "test/test_url_constants.cc",
     "test/test_url_constants.h",
     "test/test_web_thread.cc",
@@ skipping 184 matching lines @@
 }
 
 grit("resources") {
   source = "ios_web_resources.grd"
   use_qualified_include = true
   outputs = [
     "grit/ios_web_resources.h",
     "ios_web_resources.pak",
   ]
 }