Support an --install-from-webstore command line switch

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 1320 matching lines @@
   // specifies --uninstall-extension, attempt the uninstall extension startup
   // action.
   if (parsed_command_line().HasSwitch(switches::kUninstallExtension)) {
     extensions::StartupHelper extension_startup_helper;
     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;
+  }
+
+
   // 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();
 
 #if defined(OS_WIN)
   // We check this here because if the profile is OTR (chromeos possibility)
@@ skipping 282 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
 }