Use msvs_shard for browser_ui.lib when syzyasan=1.

chrome/chrome_browser_ui.gypi

 # Copyright 2012 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.
 
 {
   'variables': {
     'chrome_browser_ui_non_ios_sources': [
       'browser/ui/accelerator_utils.h',
       'browser/ui/android/android_about_app_info.cc',
       'browser/ui/android/android_about_app_info.h',
@@ skipping 2930 matching lines @@
           'sources': [ '<@(chrome_browser_ui_webrtc_sources)' ],
         }],
         ['enable_service_discovery==1', {
           'sources': [ '<@(chrome_browser_ui_service_discovery_sources)' ],
         }],
         ['enable_spellcheck==1', {
           'dependencies': [
             '../third_party/hunspell/hunspell.gyp:hunspell',
           ],
         }],
+        # Temporary fix to break the browser_ui target into smaller chunks so it
+        # will link with SyzyASan builds.
+        ['OS=="win" and syzyasan==1', {
+          'msvs_shard': 4,
+        }],
       ],
     },
   ],
 }