Change a result code ENUM value to help diagnose unexpected histogram data

chrome/browser/chrome_browser_main.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/browser/chrome_browser_main.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 1289 matching lines @@
     if (extension_startup_helper.UninstallExtension(
             parsed_command_line(), profile_))
       return content::RESULT_CODE_NORMAL_EXIT;
     return chrome::RESULT_CODE_UNINSTALL_EXTENSION_ERROR;
   }
 
   if (parsed_command_line().HasSwitch(switches::kInstallFromWebstore)) {
     extensions::StartupHelper helper;
     if (helper.InstallFromWebstore(parsed_command_line(), profile_))
       return content::RESULT_CODE_NORMAL_EXIT;
-    return chrome::RESULT_CODE_INSTALL_FROM_WEBSTORE_ERROR;
+    return chrome::RESULT_CODE_INSTALL_FROM_WEBSTORE_ERROR_2;
   }
 
 
   // Start watching for hangs during startup. We disarm this hang detector when
   // ThreadWatcher takes over or when browser is shutdown or when
   // startup_watcher_ is deleted.
   startup_watcher_->Arm(base::TimeDelta::FromSeconds(300));
 
   // Start watching for a hang.
   MetricsService::LogNeedForCleanShutdown();
@@ skipping 289 matching lines @@
     if (base::win::GetVersion() <= base::win::VERSION_XP)
       uma_name += "_XP";
 
     uma_name += "_PreRead_";
     uma_name += pre_read_percentage;
     AddPreReadHistogramTime(uma_name.c_str(), time);
   }
 #endif
 #endif
 }