Implements a Zip() utility function. Refactor existing

chrome/common/extensions/extension_unpacker.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/common/extensions/extension_unpacker.h"
 
 #include "base/file_util.h"
 #include "base/scoped_handle.h"
 #include "base/scoped_temp_dir.h"
 #include "base/string_util.h"
 #include "base/third_party/nss/blapi.h"
 #include "base/third_party/nss/sha256.h"
 #include "base/thread.h"
 #include "base/values.h"
 #include "net/base/file_stream.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/json_value_serializer.h"
 #include "chrome/common/notification_service.h"
-#include "chrome/common/unzip.h"
 #include "chrome/common/url_constants.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "webkit/glue/image_decoder.h"
+#include "chrome/common/zip.h"
 
 namespace {
 const char kCurrentVersionFileName[] = "Current Version";
 
 // The name of a temporary directory to install an extension into for
 // validation before finalizing install.
 const char kTempExtensionName[] = "TEMP_INSTALL";
 
 // Chromium Extension magic number
 const char kExtensionFileMagic[] = "Cr24";
@@ skipping 276 matching lines @@
     return false;
   }
 
   decoded_images_.push_back(MakeTuple(image_bitmap, path));
   return true;
 }
 
 void ExtensionUnpacker::SetError(const std::string &error) {
   error_message_ = error;
 }