chromeos: Fix wrong ZipSelectionFunction src_dir check

chrome/browser/chromeos/extensions/file_manager/file_browser_private_api.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/browser/chromeos/extensions/file_manager/file_browser_private_api.h"
 
 #include <sys/stat.h>
 #include <sys/statvfs.h>
 #include <sys/types.h>
 #include <utime.h>
@@ skipping 3204 matching lines @@
     if (path.empty())
       return false;
     files.push_back(path);
   }
 
   // Third param is the name of the output zip file.
   std::string dest_name;
   if (!args_->GetString(2, &dest_name) || dest_name.empty())
     return false;
 
-  // Check if the dir path is under Drive cache directory.
+  // Check if the dir path is under Drive mount point.
   // TODO(hshi): support create zip file on Drive (crbug.com/158690).
-  drive::DriveSystemService* system_service =
-      drive::DriveSystemServiceFactory::GetForProfile(profile_);
-  drive::DriveCache* cache = system_service ? system_service->cache() : NULL;
-  if (cache && cache->IsUnderDriveCacheDirectory(src_dir))
+  if (drive::util::IsUnderDriveMountPoint(src_dir))
     return false;
 
   base::FilePath dest_file = src_dir.Append(dest_name);
   std::vector<base::FilePath> src_relative_paths;
   for (size_t i = 0; i != files.size(); ++i) {
     const base::FilePath& file_path = files[i];
 
     // Obtain the relative path of |file_path| under |src_dir|.
     base::FilePath relative_path;
     if (!src_dir.AppendRelativePath(file_path, &relative_path))
@@ skipping 66 matching lines @@
 OpenNewWindowFunction::OpenNewWindowFunction() {}
 
 OpenNewWindowFunction::~OpenNewWindowFunction() {}
 
 bool OpenNewWindowFunction::RunImpl() {
   std::string url;
   EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &url));
   file_manager_util::OpenNewWindow(profile_, GURL(url));
   return true;
 }