Pass in SW_SHOW to ShellExecuteEx as the plugin installers can rely on this...

webkit/default_plugin/plugin_impl.cc

 // Copyright (c) 2006-2008 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 "webkit/default_plugin/plugin_impl.h"
 
 #include <shellapi.h>
 
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 600 matching lines @@
     DLOG(WARNING) << "Failed to download plugin";
     set_plugin_installer_state(PluginDownloadFailed);
     DisplayPluginDownloadFailedStatus();
   } else {
     DLOG(INFO) << "Successfully downloaded plugin installer";
     set_plugin_installer_state(PluginDownloadCompleted);
 
     std::wstring file_path =
         reinterpret_cast<const wchar_t*>(download_file_info->lpData);
 
+    std::wstring current_directory =
+        file_util::GetDirectoryFromPath(file_path);
+
     SHELLEXECUTEINFO shell_execute_info = {0};
     shell_execute_info.cbSize = sizeof(shell_execute_info);
     shell_execute_info.fMask = SEE_MASK_NOCLOSEPROCESS;
     shell_execute_info.lpFile = file_path.c_str();
+    shell_execute_info.lpDirectory = current_directory.c_str();
+    shell_execute_info.nShow = SW_SHOW;
 
     if (!ShellExecuteEx(&shell_execute_info)) {
       DLOG(WARNING) << "Failed to launch plugin installer "
                     << file_path.c_str() << " Error "
                     << ::GetLastError();
       set_plugin_installer_state(PluginInstallerLaunchFailure);
       DisplayStatus(IDS_DEFAULT_PLUGIN_INSTALLATION_FAILED_MSG);
       NOTREACHED();
     } else {
       DLOG(INFO) << "Successfully launched plugin installer";
@@ skipping 108 matching lines @@
 }
 
 void PluginInstallerImpl::NotifyPluginStatus(int status) {
   default_plugin::g_browser->getvalue(
     instance_,
     static_cast<NPNVariable>(
         default_plugin::kMissingPluginStatusStart + status),
     NULL);
 }