Move extension unpack intermediate dir to Extensions/Temp

chrome/browser/extensions/crx_installer.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_CRX_INSTALLER_H_
 #define CHROME_BROWSER_EXTENSIONS_CRX_INSTALLER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 169 matching lines @@
 
   CrxInstaller(base::WeakPtr<ExtensionService> frontend_weak,
                ExtensionInstallPrompt* client,
                const WebstoreInstaller::Approval* approval);
   virtual ~CrxInstaller();
 
   // Converts the source user script to an extension.
   void ConvertUserScriptOnFileThread();
 
   // Converts the source web app to an extension.
-  void ConvertWebAppOnFileThread(const WebApplicationInfo& web_app);
+  void ConvertWebAppOnFileThread(const WebApplicationInfo& web_app,
+                                 const FilePath& install_directory);
 
   // Called after OnUnpackSuccess as a last check to see whether the install
   // should complete.
   CrxInstallerError AllowInstall(const Extension* extension);
 
   // SandboxedUnpackerClient
   virtual void OnUnpackFailure(const string16& error_message) OVERRIDE;
   virtual void OnUnpackSuccess(const FilePath& temp_dir,
                                const FilePath& extension_dir,
                                const base::DictionaryValue* original_manifest,
@@ skipping 160 matching lines @@
 
   // Used to show the install dialog.
   ExtensionInstallPrompt::ShowDialogCallback show_dialog_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(CrxInstaller);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_CRX_INSTALLER_H_