Remove PRODUCT_STRING_PATH from chrome_constants.h on Windows.

chrome/chrome_watcher/BUILD.gn

 # Copyright 2015 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.
 
 import("//chrome/version.gni")
 import("//third_party/kasko/kasko.gni")
 
 source_set("client") {
   sources = [
     "chrome_watcher_main_api.cc",
@@ skipping 39 matching lines @@
   inputs = [
     "chrome_watcher.def",
   ]
   deps = [
     ":chrome_watcher_resources",
     ":client",
     ":kasko_util",
     "//base",
     "//base:base_static",
     "//build/config/sanitizers:deps",
+    "//chrome/common:metrics_constants_util_win",
     "//chrome/installer/util:with_no_strings",
     "//components/browser_watcher",
   ]
   ldflags = [ "/DEF:" + rebase_path("chrome_watcher.def", root_build_dir) ]
   configs -= [ "//build/config/win:console" ]
   configs += [ "//build/config/win:windowed" ]
 }