Unpack extensions inside chrome's directory.

chrome/common/extensions/extension_constants.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_constants.h"
 
 namespace extension_manifest_keys {
 
 const wchar_t* kAllFrames = L"all_frames";
 const wchar_t* kBackground = L"background_page";
@@ skipping 235 matching lines @@
     "must be set to true in order to use any other web content features.";
 }  // namespace extension_manifest_errors
 
 namespace extension_urls {
 const char* kGalleryBrowsePrefix = "https://chrome.google.com/extensions";
 const char* kGalleryDownloadPrefix =
     "https://clients2.googleusercontent.com/crx/download";
 const char* kMiniGalleryBrowsePrefix = "https://tools.google.com/chrome/";
 const char* kMiniGalleryDownloadPrefix = "https://dl-ssl.google.com/chrome/";
 }
+
+namespace extension_filenames {
+const char* kTempExtensionName = "CRX_INSTALL";
+
+// The file to write our decoded images to, relative to the extension_path.
+const char* kDecodedImagesFilename = "DECODED_IMAGES";
+
+// The file to write our decoded message catalogs to, relative to the
+// extension_path.
+const char* kDecodedMessageCatalogsFilename = "DECODED_MESSAGE_CATALOGS";
+}