Remove stale code to delete the metro user data dir. It never shipped.

chrome/installer/util/product.cc

Index: chrome/installer/util/product.cc
diff --git a/chrome/installer/util/product.cc b/chrome/installer/util/product.cc
index 44e7cefc12ee4cc3ca08e7813e911c2c2b16c7c7..1d11a7ee72fc40a75cefea5862ab6cacc6b3a0b1 100644
--- a/chrome/installer/util/product.cc
+++ b/chrome/installer/util/product.cc
@@ -62,8 +62,8 @@ void Product::InitializeFromUninstallCommand(
   operations_->ReadOptions(uninstall_command, &options_);
 }
 
-void Product::GetUserDataPaths(std::vector<base::FilePath>* paths) const {
-  GetChromeUserDataPaths(distribution_, paths);
+base::FilePath Product::GetUserDataPath() const {
+  return GetChromeUserDataPath(distribution_);
 }
 
 bool Product::LaunchChrome(const base::FilePath& application_path) const {