Only do DelegateExecute verb handler registration for Google Chrome.

chrome/installer/util/google_chrome_distribution_dummy.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.
 //
 // This file defines dummy implementation of several functions from the
 // BrowserDistribution class for Google Chrome. These functions allow 64-bit
 // Windows Chrome binary to build successfully. Since this binary is only used
 // for Native Client support, most of the install/uninstall functionality is not
 // necessary there.
 
@@ skipping 93 matching lines @@
 std::wstring GoogleChromeDistribution::GetUninstallRegPath() {
   NOTREACHED();
   return std::wstring();
 }
 
 std::wstring GoogleChromeDistribution::GetVersionKey() {
   NOTREACHED();
   return std::wstring();
 }
 
+bool GoogleChromeDistribution::GetDelegateExecuteHandlerData(
+    string16* handler_class_uuid,
+    string16* type_lib_uuid,
+    string16* type_lib_version,
+    string16* interface_uuid) {
+  NOTREACHED();
+  return false;
+}
+
+
 void GoogleChromeDistribution::UpdateInstallStatus(bool system_install,
     installer::ArchiveType archive_type,
     installer::InstallStatus install_status) {
   NOTREACHED();
 }
 
 bool GoogleChromeDistribution::GetExperimentDetails(
     UserExperiment* experiment, int flavor) {
   NOTREACHED();
   return false;
@@ skipping 23 matching lines @@
     const DictionaryValue& root, std::wstring* uninstall_metrics_string) {
   NOTREACHED();
   return false;
 }
 
 bool GoogleChromeDistribution::BuildUninstallMetricsString(
     DictionaryValue* uninstall_metrics_dict, std::wstring* metrics) {
   NOTREACHED();
   return false;
 }