Build crash_service in Win GN builds.

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 508 matching lines @@
       "//ui/app_list:app_list_unittests",  # TODO(GYP)
       "//ui/gfx:gfx_unittests",  # TODO(GYP)
     ]
   }
 
   if (is_win) {
     deps += [
       "//base:pe_image_test",
       "//chrome_elf:chrome_elf_unittests",
       "//chrome_elf:dll_hash_main",
-
-      # "//components/crash/tools:crash_service", TODO(GYP) - doesn't fully build yet.
+      "//components/crash/tools:crash_service",
       "//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 281 matching lines @@
       "//url:url_unittests",  # PASSES 4/17/2015
 
       # TODO(GYP) installer_util_unittests
       # TODO(GYP) app_installer_unittests
       # TODO(GYP) nacl_integration
       # TODO(GYP) telemetry_perf_unittests
       # TODO(GYP) telemetry_unittests
     ]
   }
 }