Copy asan_rtl.* and agent_logger.exe to the syzygy directory for the ASan builds.

chrome/chrome_syzygy.gyp

 # Copyright (c) 2011 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.
 {
   'conditions': [
+    ['OS=="win" and asan==1', {
+      'variables': {
+        'dest_dir': '<(PRODUCT_DIR)/syzygy',
+        'syzygy_exe_dir': '<(DEPTH)/third_party/syzygy/binaries/exe',
+      },
+      # Copy the SyzyASan runtime and logger to the syzygy directory.
+      'targets': [
+        {
+          'target_name': 'copy_syzyasan_binaries',
+          'type': 'none',
+          'outputs': [
+            '<(dest_dir)/agent_logger.exe',
+            '<(dest_dir)/syzyasan_rtl.dll',
+            '<(dest_dir)/syzyasan_rtl.dll.pdb',
+          ],
+          'copies': [
+            {
+              'destination': '<(dest_dir)',
+              'files': [
+                '<(syzygy_exe_dir)/agent_logger.exe',
+                '<(syzygy_exe_dir)/syzyasan_rtl.dll',
+                '<(syzygy_exe_dir)/syzyasan_rtl.dll.pdb',
+              ],
+            },
+          ],
+        },
+      ],
+    }],
     ['OS=="win" and fastbuild==0', {
       'variables': {
         'dll_name': 'chrome',
       },
       'targets': [
         {
           'target_name': 'chrome_dll_syzygy',
           'type': 'none',
           'sources' : [],
           'includes': [
@@ skipping 42 matching lines @@
                   '<(PRODUCT_DIR)/chrome_child.dll.pdb',
                 ],
               },
             ],
           }],
         }],
       ],
     }],
   ],
 }