Remove PRODUCT_STRING_PATH from chrome_constants.h on Windows.

chrome/common/BUILD.gn

Index: chrome/common/BUILD.gn
diff --git a/chrome/common/BUILD.gn b/chrome/common/BUILD.gn
index 4a08381e7408119cc027723d429120943f4c8560..2dea29822753b8039e19c6fb014fc690d2bf5bcc 100644
--- a/chrome/common/BUILD.gn
+++ b/chrome/common/BUILD.gn
@@ -351,6 +351,19 @@ static_library("constants") {
   }
 }
 
+# GYP version: chrome/chrome_common.gypi:metrics_constants_util_win
+source_set("metrics_constants_util_win") {
+  sources = [
+    "metrics_constants_util_win.cc",
+    "metrics_constants_util_win.h",
+  ]
+
+  deps = [
+    "//base",
+    "//chrome/installer/util:with_no_strings",
+  ]
+}
+
 source_set("test_support") {
   testonly = true
   visibility = [ "//chrome/test:test_support" ]
@@ -382,7 +395,7 @@ source_set("test_support") {
   }
 }
 
-# GN version: chrome/chrome.gyp:app_mode_app_support
+# GYP version: chrome/chrome.gyp:app_mode_app_support
 static_library("app_mode_app_support") {
   sources = [
     "mac/app_mode_chrome_locator.h",