Convert some component source sets to static library

components/json_schema/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.
 
-source_set("json_schema") {
+static_library("json_schema") {
   sources = [
     "json_schema_constants.cc",
     "json_schema_constants.h",
     "json_schema_validator.cc",
     "json_schema_validator.h",
   ]
 
   deps = [
     "//base",
     "//third_party/re2",
@@ skipping 25 matching lines @@
     "json_schema_validator_unittest_base.cc",
     "json_schema_validator_unittest_base.h",
   ]
   deps = [
     ":json_schema",
     ":unit_tests_bundle_data",
     "//base",
     "//testing/gtest",
   ]
 }