Fix bug where many extensions don't install due to sandbox.

chrome/browser/utility_process_host.cc

 // Copyright (c) 2009 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/utility_process_host.h"
 
+#include "app/app_switches.h"
+#include "app/l10n_util.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/string_util.h"
 #include "base/task.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/render_messages.h"
 #include "ipc/ipc_switches.h"
@@ skipping 65 matching lines @@
   if (exe_path.empty()) {
     NOTREACHED() << "Unable to get utility process binary name.";
     return false;
   }
 
   CommandLine cmd_line(exe_path);
   cmd_line.AppendSwitchWithValue(switches::kProcessType,
                                  switches::kUtilityProcess);
   cmd_line.AppendSwitchWithValue(switches::kProcessChannelID,
                                  ASCIIToWide(channel_id()));
+  // Pass on the browser locale.
+  std::string locale = l10n_util::GetApplicationLocale(L"");
+  cmd_line.AppendSwitchWithValue(switches::kLang, ASCIIToWide(locale));
+
   SetCrashReporterCommandLine(&cmd_line);
 
   base::ProcessHandle process;
 #if defined(OS_WIN)
   if (!UseSandbox()) {
     // Don't use the sandbox during unit tests.
     base::LaunchApp(cmd_line, false, false, &process);
   } else if (exposed_dir.empty()) {
     process = sandbox::StartProcess(&cmd_line);
   } else {
@@ skipping 54 matching lines @@
     IPC_MESSAGE_HANDLER(UtilityHostMsg_UnpackWebResource_Succeeded,
                         Client::OnUnpackWebResourceSucceeded)
     IPC_MESSAGE_HANDLER(UtilityHostMsg_UnpackWebResource_Failed,
                         Client::OnUnpackWebResourceFailed)
     IPC_MESSAGE_HANDLER(UtilityHostMsg_ParseUpdateManifest_Succeeded,
                         Client::OnParseUpdateManifestSucceeded)
     IPC_MESSAGE_HANDLER(UtilityHostMsg_ParseUpdateManifest_Failed,
                         Client::OnParseUpdateManifestFailed)
   IPC_END_MESSAGE_MAP_EX()
 }