Add GCAPI to the GN build.

chrome/installer/mini_installer/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/config/ui.gni")
 import("//build/module_args/v8.gni")
 import("//chrome/version.gni")
 import("//third_party/icu/config.gni")
 
@@ skipping 50 matching lines @@
   sources = [
     "configuration_test.cc",
     "decompress_test.cc",
     "mini_string_test.cc",
   ]
 
   public_deps = [
     ":lib",
   ]
   deps = [
+    "//base",
     "//testing/gtest",
   ]
 }
 
 packed_files_rc_file = "$target_gen_dir/packed_files.rc"
 
 action("archive") {
   script = "//chrome/tools/build/win/create_installer_archive.py"
 
   release_file = "chrome.release"
@@ skipping 111 matching lines @@
   libs = [ "setupapi.lib" ]
 
   deps = [
     ":archive",
     ":lib",
     ":version",
     "//build/config/sanitizers:deps",
     "//build/win:default_exe_manifest",
   ]
 }