Resurrect the cloud printer driver.

BUILD.gn

 # Copyright (c) 2013 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.
 
 # This is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
@@ skipping 660 matching lines @@
     ]
   }
 
   if (is_win) {
     deps += [
       "//base:pe_image_test",
       "//chrome/install_static:install_static_unittests",
       "//chrome/installer/setup:setup_unittests",
       "//chrome_elf:chrome_elf_unittests",
       "//chrome_elf:dll_hash_main",
+      "//cloud_print:cloud_print_unittests",
       "//components/wifi:wifi_test",
       "//net:quic_client",
       "//net:quic_server",
       "//sandbox/win:pocdll",
       "//sandbox/win:sandbox_poc",
       "//sandbox/win:sbox_integration_tests",
       "//sandbox/win:sbox_unittests",
       "//sandbox/win:sbox_validation_tests",
       "//testing/gtest:gtest_main",
       "//third_party/codesighs:msmap2tsv",
@@ skipping 406 matching lines @@
   assert(target_name != "")  # Mark as used.
   sources = invoker.actual_sources
   assert(
       sources == invoker.actual_sources,
       "Do not use a platform name in your output directory (found \"$root_build_dir\"). http://crbug.com/548283")
 }
 
 assert_valid_out_dir("_unused") {
   actual_sources = [ "$root_build_dir/foo" ]
 }