[Extensions] Use compiled feature files

tools/json_schema_compiler/test/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/config/features.gni")
 import("//build/json_schema_api.gni")
 import("//tools/json_schema_compiler/json_features.gni")
 
 json_schema_api("api") {
   visibility = [ ":*" ]
@@ skipping 17 matching lines @@
     "objects_movable.idl",
     "objects_movable_json.json",
     "simple_api.json",
   ]
 
   schemas = true
   root_namespace = "test::api::%(namespace)s"
 }
 
 if (enable_extensions) {
-  json_features("features_test") {
+  json_features("features_compiler_test") {
     feature_class = "APIFeature"
-    provider_class = "TestAPIFeatureProvider"
+    provider_class = "CompilerTestFeatureProvider"
     sources = [
       "features_test.json",
       "features_test2.json",
     ]
   }
 }
 
 source_set("schema_test") {
   testonly = true
   sources = [
     "test_util.cc",
     "test_util.h",
   ]
 
   # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   public_deps = [
     ":api",
     "//base",
   ]
 }
 
 if (enable_extensions) {
   source_set("features_generation_test") {
     testonly = true
     public_deps = [
-      ":features_test",
+      ":features_compiler_test",
     ]
   }
 }