Unpack extensions inside chrome's directory.

chrome/browser/extensions/crx_installer.cc

 // Copyright (c) 2010 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/extensions/crx_installer.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/file_util.h"
+#include "base/path_service.h"
 #include "base/scoped_temp_dir.h"
 #include "base/task.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/extensions/convert_user_script.h"
 #include "chrome/browser/extensions/extension_error_reporter.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/browser/web_applications/web_app.h"
+#include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/extension_file_util.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/notification_type.h"
 #include "grit/browser_resources.h"
 #include "grit/chromium_strings.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
 namespace {
   // Helper function to delete files. This is used to avoid ugly casts which
   // would be necessary with PostMessage since file_util::Delete is overloaded.
@@ skipping 33 matching lines @@
   }
 
   // Make sure the UI is deleted on the ui thread.
   ChromeThread::DeleteSoon(ChromeThread::UI, FROM_HERE, client_);
   client_ = NULL;
 }
 
 void CrxInstaller::InstallCrx(const FilePath& source_file) {
   source_file_ = source_file;
 
+  FilePath user_data_temp_dir;
+  CHECK(PathService::Get(chrome::DIR_USER_DATA_TEMP, &user_data_temp_dir));
+
   scoped_refptr<SandboxedExtensionUnpacker> unpacker(
       new SandboxedExtensionUnpacker(
           source_file,
+          user_data_temp_dir,
           g_browser_process->resource_dispatcher_host(),
           this));
 
   if (force_web_origin_to_download_url_ && original_url_.is_valid()) {
     unpacker->set_web_origin(original_url_.GetOrigin());
   }
 
   ChromeThread::PostTask(
       ChromeThread::FILE, FROM_HERE,
       NewRunnableMethod(
@@ skipping 240 matching lines @@
     client_->OnInstallSuccess(extension_.get());
 
   // Tell the frontend about the installation and hand off ownership of
   // extension_ to it.
   frontend_->OnExtensionInstalled(extension_.release(),
                                   allow_privilege_increase_);
 
   // We're done. We don't post any more tasks to ourselves so we are deleted
   // soon.
 }