Add the content_shell_syzyasan GN target.

content/shell/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/features.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//build/config/win/console_app.gni")
 import("//build/config/win/manifest.gni")
 import("//media/media_options.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//tools/grit/repack.gni")
 import("//tools/grit/grit_rule.gni")
 if (is_android) {
   import("//build/config/android/config.gni")
 } else if (is_mac) {
   import("//build/config/mac/rules.gni")
   import("//build_overrides/v8.gni")
   import("//build/mac/tweak_info_plist.gni")
+} else if (is_win) {
+  import("//build/win/syzygy/syzygy.gni")
 }
 
 declare_args() {
   content_shell_product_name = "Content Shell"
   content_shell_version = "99.77.34.5"
 }
 
 config("content_shell_lib_warnings") {
   if (is_clang) {
     # TODO(thakis): Remove this once http://crbug.com/383820 is figured out
@@ skipping 495 matching lines @@
     deps = [
       "//base",
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
       "//components/crash/content/tools:crash_service",
     ]
 
     configs -= [ "//build/config/win:console" ]
     configs += [ "//build/config/win:windowed" ]
   }
+
+  if (is_syzyasan) {
+    syzygy_asan("content_shell_syzyasan") {
+      binary_name = "content_shell.exe"
+      dest_dir = "$root_out_dir/syzygy"
+      deps = [
+        "//content/shell:content_shell",
+      ]
+      testonly = true
+    }
+  }
 }
 
 if (is_mac) {
   mac_xib_bundle_data("content_shell_framework_xibs") {
     sources = [
       "app/English.lproj/HttpAuth.xib",
       "app/English.lproj/MainMenu.xib",
     ]
     output_path = "{{bundle_resources_dir}}/English.lproj"
   }
@@ skipping 165 matching lines @@
       "{{bundle_resources_dir}}/{{source_file_part}}",
     ]
   }
 }
 
 mojom("mojo_bindings") {
   sources = [
     "common/layout_test/layout_test_bluetooth_fake_adapter_setter.mojom",
   ]
 }