Use chrome::kChromeVersion in installer::GetModulePath().

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 3359 matching lines @@
     "../browser/ui/website_settings/website_settings_unittest.cc",
     "../browser/ui/webui/browsing_history_handler_unittest.cc",
     "../browser/ui/webui/fileicon_source_unittest.cc",
     "../browser/ui/webui/local_state/local_state_ui_unittest.cc",
     "../browser/ui/webui/log_web_ui_url_unittest.cc",
     "../browser/update_client/chrome_update_query_params_delegate_unittest.cc",
     "../browser/webshare/share_service_impl_unittest.cc",
     "../browser/webshare/share_target_pref_helper_unittest.cc",
     "../browser/win/chrome_elf_init_unittest.cc",
     "../browser/win/enumerate_modules_model_unittest.cc",
+    "../common/chrome_constants_win_unittest.cc",
     "../common/chrome_content_client_unittest.cc",
     "../common/chrome_paths_unittest.cc",
     "../common/component_flash_hint_file_linux_unittest.cc",
     "../common/conflicts/module_watcher_win_unittest.cc",
     "../common/crash_keys_unittest.cc",
     "../common/ini_parser_unittest.cc",
     "../common/mac/cfbundle_blocker_unittest.mm",
     "../common/mac/mock_launchd.cc",
     "../common/mac/mock_launchd.h",
     "../common/origin_trials/chrome_origin_trial_policy_unittest.cc",
@@ skipping 57 matching lines @@
   if (is_android || is_linux || is_win) {
     data += [
       "$root_out_dir/chrome_100_percent.pak",
       "$root_out_dir/locales/en-US.pak",
       "$root_out_dir/resources.pak",
     ]
   }
   if (is_linux || is_win) {
     data += [ "$root_out_dir/chrome_200_percent.pak" ]
   }
+  if (is_win) {
+    data_deps = [
+      "//chrome:chrome_initial",
+    ]
+    data += [ "$root_out_dir/chrome.exe" ]
+  }
 
   defines = []
 
   deps = [
     # NOTE: New dependencies should generally be added in the OS!="ios"
     # dependencies block below, rather than here.
     # Unit tests should only depend on:
     # 1) everything that the chrome binaries depend on:
     "//chrome:browser_dependencies",
     "//chrome:child_dependencies",
@@ skipping 1686 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }