Reland "[Chromecast] Use base::FeatureList to control features."

chromecast/base/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("//build/util/process_version.gni")
 import("//chromecast/chromecast.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
@@ skipping 20 matching lines @@
   sources = [
     "alarm_manager.cc",
     "alarm_manager.h",
     "android/dumpstate_writer.cc",
     "android/dumpstate_writer.h",
     "android/system_time_change_notifier_android.cc",
     "android/system_time_change_notifier_android.h",
     "bind_to_task_runner.h",
     "cast_constants.cc",
     "cast_constants.h",
+    "cast_features.cc",
+    "cast_features.h",
     "cast_paths.cc",
     "cast_paths.h",
     "cast_resource.cc",
     "cast_resource.h",
     "chromecast_config_android.cc",
     "chromecast_config_android.h",
     "device_capabilities.h",
     "device_capabilities_impl.cc",
     "device_capabilities_impl.h",
     "error_codes.cc",
@@ skipping 68 matching lines @@
   public_deps = [
     ":base",
     "//base",
   ]
 }
 
 test("cast_base_unittests") {
   sources = [
     "alarm_manager_unittest.cc",
     "bind_to_task_runner_unittest.cc",
+    "cast_features_unittest.cc",
     "device_capabilities_impl_unittest.cc",
     "error_codes_unittest.cc",
     "path_utils_unittest.cc",
     "process_utils_unittest.cc",
     "serializers_unittest.cc",
     "system_time_change_notifier_unittest.cc",
   ]
 
   deps = [
     ":test_support",
@@ skipping 107 matching lines @@
       "$java_src_dir/org/chromium/chromecast/base/ChromecastConfigAndroid.java",
       "$java_src_dir/org/chromium/chromecast/base/DumpstateWriter.java",
       "$java_src_dir/org/chromium/chromecast/base/SystemTimeChangeNotifierAndroid.java",
     ]
 
     deps = [
       "//base:base_java",
     ]
   }
 }