diff -up chromium-81.0.4044.92/third_party/perfetto/gn/BUILD.gn.unbundle-zlib chromium-81.0.4044.92/third_party/perfetto/gn/BUILD.gn
--- chromium-81.0.4044.92/third_party/perfetto/gn/BUILD.gn.unbundle-zlib	2020-04-13 12:25:09.001172601 -0400
+++ chromium-81.0.4044.92/third_party/perfetto/gn/BUILD.gn	2020-04-13 12:25:23.688921586 -0400
@@ -294,7 +294,7 @@ if (enable_perfetto_zlib) {
       public_configs = [ "//buildtools:zlib_config" ]
       public_deps = [ "//buildtools:zlib" ]
     } else {
-      public_configs = [ "//third_party/zlib:zlib_config" ]
+      public_configs = [ "//third_party/zlib:system_zlib" ]
       public_deps = [ "//third_party/zlib" ]
     }
   }