MD Downloads: track downloads in C++, dispatch discrete JS updates

chrome/test/BUILD.gn

 # Copyright 2014 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("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/chrome_tests.gni")
@@ skipping 1592 matching lines @@
     "//ui/resources",
   ]
   data_deps = []
 
   # TODO(GYP) Windows stuff
   # ['incremental_chrome_dll==1', {
   #   'UseLibraryDependencyInputs': "true",
 
   if (!is_ios) {
     deps += [
-      ":unit_tests_js",
       "//components/autofill/content/browser/wallet:test_support",
       "//components/autofill/content/renderer:test_support",
       "//components/data_reduction_proxy/core/browser:test_support",
       "//components/data_use_measurement/core",
       "//components/metrics/proto",
       "//components/safe_browsing_db",
       "//components/safe_json:test_support",
       "//components/strings",
       "//components/webdata_services:test_support",
       "//content/app/resources",
@@ skipping 35 matching lines @@
   } else {
     sources += rebase_path(
             chrome_tests_unit_gypi_values.chrome_unit_tests_non_android_sources,
             ".",
             "//chrome")
     sources -=
         [ "../browser/download/download_request_infobar_delegate_unittest.cc" ]
   }
 
   if (!is_android && !is_ios) {
+    deps += [ ":unit_tests_js" ]
     sources += rebase_path(
             chrome_tests_unit_gypi_values.chrome_unit_tests_non_mobile_sources,
             ".",
             "//chrome")
   }
 
   if (is_ios || is_chromeos) {
     sources -= [ "../browser/signin/chrome_signin_status_metrics_provider_delegate_unittest.cc" ]
   }
   if (enable_background) {
@@ skipping 552 matching lines @@
 if (is_android) {
   android_library("unit_tests_java") {
     DEPRECATED_java_in_dir = "//chrome/test/android/unit_tests_apk/src"
     deps = [
       "//base:base_java",
       "//chrome/android:chrome_java",
       "//content/public/android:content_java",
     ]
   }
 }