Remove PRODUCT_STRING_PATH from chrome_constants.h on Windows.

chrome/chrome_common.gypi

Index: chrome/chrome_common.gypi
diff --git a/chrome/chrome_common.gypi b/chrome/chrome_common.gypi
index 9ded65f0126314e0d4b2652e3b641bcb5b736b3f..a950546ae06f98325e5a9e5ddc067ff8079bb998 100644
--- a/chrome/chrome_common.gypi
+++ b/chrome/chrome_common.gypi
@@ -655,5 +655,18 @@
         '../skia/skia.gyp:skia_mojo',
       ],
     },
+    {
+      # GN version: //chrome/common:metrics_constants_util_win
+      'target_name': 'metrics_constants_util_win',
+      'type': 'static_library',
+      'sources': [
+        'common/metrics_constants_util_win.cc',
+        'common/metrics_constants_util_win.h',
+      ],
+      'dependencies': [
+        'installer_util',
+        '../base/base.gyp:base',
+      ],
+    },
   ],
 }