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

chrome/installer/util/product.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/installer/util/product.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 44 matching lines @@
 
 void Product::InitializeFromPreferences(const MasterPreferences& prefs) {
   operations_->ReadOptions(prefs, &options_);
 }
 
 void Product::InitializeFromUninstallCommand(
     const CommandLine& uninstall_command) {
   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 {
   bool success = !application_path.empty();
   if (success) {
     CommandLine cmd(application_path.Append(installer::kChromeExe));
     success = base::LaunchProcess(cmd, base::LaunchOptions(), NULL);
   }
   return success;
 }
@@ skipping 92 matching lines @@
   if (distribution_->HasUserExperiments()) {
     VLOG(1) << "LaunchUserExperiment status: " << status << " product: "
             << distribution_->GetDisplayName()
             << " system_level: " << system_level;
     operations_->LaunchUserExperiment(
         setup_path, options_, status, system_level);
   }
 }
 
 }  // namespace installer