Introduce SerializeDictionaryForest for devtools_target_ui

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 3789 matching lines @@
     deps += [
       "//device/battery:mojo_bindings",
       "//ipc",
       "//third_party/libaddressinput",
     ]
   }
 
   if (!is_android) {
     sources += [
       "../browser/devtools/devtools_ui_bindings_unittest.cc",
+      "../browser/devtools/serialize_dictionary_forest_unittest.cc",
       "../browser/download/download_dir_policy_handler_unittest.cc",
       "../browser/lifetime/keep_alive_registry_unittest.cc",
       "../browser/renderer_context_menu/render_view_context_menu_test_util.cc",
       "../browser/renderer_context_menu/render_view_context_menu_test_util.h",
       "../browser/ui/autofill/save_card_bubble_controller_impl_unittest.cc",
       "../browser/ui/bluetooth/bluetooth_chooser_controller_unittest.cc",
       "../browser/ui/passwords/manage_passwords_ui_controller_unittest.cc",
     ]
     deps += [
       ":unit_tests_js",
@@ skipping 1419 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }