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

chrome/chrome_syzygy.gyp

Index: chrome/chrome_syzygy.gyp
diff --git a/chrome/chrome_syzygy.gyp b/chrome/chrome_syzygy.gyp
index 0801d18e62b43d9c9101ae5abbaa4698b74bffd6..ea73fa5ef21c7ffec500f1896bcd39eabf9d7135 100644
--- a/chrome/chrome_syzygy.gyp
+++ b/chrome/chrome_syzygy.gyp
@@ -3,6 +3,34 @@
 # 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',