Hold cros_component_installers in browser_process.

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/common/features.gni")
@@ skipping 3750 matching lines @@
   if (is_desktop_linux && enable_native_notifications) {
     sources += [ "../browser/notifications/notification_platform_bridge_linux_unittest.cc" ]
   }
 
   if (is_linux || is_win) {
     sources += [ "../browser/webshare/share_service_impl_unittest.cc" ]
   }
 
   if (is_chromeos) {
     sources -= [ "../browser/signin/chrome_signin_status_metrics_provider_delegate_unittest.cc" ]
+    sources +=
+        [ "../browser/component_updater/cros_component_installer_unittest.cc" ]
   }
   if (enable_background) {
     sources += [
       "../browser/background/background_application_list_model_unittest.cc",
       "../browser/background/background_contents_service_unittest.cc",
       "../browser/background/background_mode_manager_unittest.cc",
       "../browser/background/background_mode_optimizer_unittest.cc",
     ]
   }
 
@@ skipping 1350 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }