Add Syzygy support to Windows GN build.

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 182 matching lines @@
   }
 
   if (enable_configuration_policy) {
     deps += [ "//components/policy:policy_templates" ]
   }
 
   if (v8_use_external_startup_data) {
     deps += [ "//gin:gin_v8_snapshot_fingerprint" ]
   }
 
+  if (is_win) {
+    deps += [ "//chrome/tools/build/win/syzygy:chrome_dll_syzygy" ]
+  }
+
   if (is_android) {
     deps += [
       "//base/android/linker:chromium_android_linker",
       "//build/android/gyp/test:hello_world",
       "//build/android/rezip",
       "//chrome/android:chrome_public_apk",
       "//chrome/android:chrome_public_test_apk",
       "//chrome/android:chrome_shell_apk",
       "//chrome/test/chromedriver/test/webview_shell:chromedriver_webview_shell_apk",
       "//third_party/errorprone:chromium_errorprone",
@@ skipping 700 matching lines @@
       "//ui/views:views_unittests",  # TooltipControllerTest failures
       "//ui/wm:wm_unittests",  # PASSES 4/21/2015
       "//url:url_unittests",  # PASSES 4/17/2015
 
       # TODO(GYP) nacl_integration
       # TODO(GYP) telemetry_perf_unittests
       # TODO(GYP) telemetry_unittests
     ]
   }
 }