Cleaning Up Extensions When Local Content Removed

chrome/common/extensions/extension_file_util.cc

 // 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.
 
 #include "chrome/common/extensions/extension_file_util.h"
 
 #include <map>
 #include <vector>
 
 #include "base/file_util.h"
@@ skipping 348 matching lines @@
 
   // Check children of extension root to see if any of them start with _ and is
   // not on the reserved list.
   if (!CheckForIllegalFilenames(extension->path(), error)) {
     return false;
   }
 
   return true;
 }
 
-void GarbageCollectExtensions(
-    const FilePath& install_directory,
-    const std::map<std::string, FilePath>& extension_paths) {
-  // Nothing to clean up if it doesn't exist.
-  if (!file_util::DirectoryExists(install_directory))
-    return;
-
-  DVLOG(1) << "Garbage collecting extensions...";
-  file_util::FileEnumerator enumerator(install_directory,
-                                       false,  // Not recursive.
-                                       file_util::FileEnumerator::DIRECTORIES);
-  FilePath extension_path;
-  for (extension_path = enumerator.Next(); !extension_path.value().empty();
-       extension_path = enumerator.Next()) {
-    std::string extension_id;
-
-    FilePath basename = extension_path.BaseName();
-    if (IsStringASCII(basename.value())) {
-      extension_id = UTF16ToASCII(basename.LossyDisplayName());
-      if (!Extension::IdIsValid(extension_id))
-        extension_id.clear();
-    }
-
-    // Delete directories that aren't valid IDs.
-    if (extension_id.empty()) {
-      DLOG(WARNING) << "Invalid extension ID encountered in extensions "
-                       "directory: " << basename.value();
-      DVLOG(1) << "Deleting invalid extension directory "
-               << extension_path.value() << ".";
-      file_util::Delete(extension_path, true);  // Recursive.
-      continue;
-    }
-
-    std::map<std::string, FilePath>::const_iterator iter =
-        extension_paths.find(extension_id);
-
-    // If there is no entry in the prefs file, just delete the directory and
-    // move on. This can legitimately happen when an uninstall does not
-    // complete, for example, when a plugin is in use at uninstall time.
-    if (iter == extension_paths.end()) {
-      DVLOG(1) << "Deleting unreferenced install for directory "
-               << extension_path.LossyDisplayName() << ".";
-      file_util::Delete(extension_path, true);  // Recursive.
-      continue;
-    }
-
-    // Clean up old version directories.
-    file_util::FileEnumerator versions_enumerator(
-        extension_path,
-        false,  // Not recursive.
-        file_util::FileEnumerator::DIRECTORIES);
-    for (FilePath version_dir = versions_enumerator.Next();
-         !version_dir.value().empty();
-         version_dir = versions_enumerator.Next()) {
-      if (version_dir.BaseName() != iter->second.BaseName()) {
-        DVLOG(1) << "Deleting old version for directory "
-                 << version_dir.LossyDisplayName() << ".";
-        file_util::Delete(version_dir, true);  // Recursive.
-      }
-    }
-  }
-}
-
 ExtensionMessageBundle* LoadExtensionMessageBundle(
     const FilePath& extension_path,
     const std::string& default_locale,
     std::string* error) {
   error->clear();
   // Load locale information if available.
   FilePath locale_path = extension_path.Append(Extension::kLocaleFolder);
   if (!file_util::PathExists(locale_path))
     return NULL;
 
@@ skipping 255 matching lines @@
     return temp_path;
 
   return FilePath();
 }
 
 void DeleteFile(const FilePath& path, bool recursive) {
   file_util::Delete(path, recursive);
 }
 
 }  // namespace extension_file_util