Add FileSystemID parameter to IsolatedContext::RegisterFileSystemForPath.

extensions/browser/api/runtime/runtime_api.cc

 // Copyright 2014 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 "extensions/browser/api/runtime/runtime_api.h"
 
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 510 matching lines @@
 
 ExtensionFunction::ResponseAction
 RuntimeGetPackageDirectoryEntryFunction::Run() {
   fileapi::IsolatedContext* isolated_context =
       fileapi::IsolatedContext::GetInstance();
   DCHECK(isolated_context);
 
   std::string relative_path = kPackageDirectoryPath;
   base::FilePath path = extension_->path();
   std::string filesystem_id = isolated_context->RegisterFileSystemForPath(
-      fileapi::kFileSystemTypeNativeLocal, path, &relative_path);
+      fileapi::kFileSystemTypeNativeLocal, std::string(), path, &relative_path);
 
   int renderer_id = render_view_host_->GetProcess()->GetID();
   content::ChildProcessSecurityPolicy* policy =
       content::ChildProcessSecurityPolicy::GetInstance();
   policy->GrantReadFileSystem(renderer_id, filesystem_id);
   base::DictionaryValue* dict = new base::DictionaryValue();
   dict->SetString("fileSystemId", filesystem_id);
   dict->SetString("baseName", relative_path);
   return RespondNow(OneArgument(dict));
 }
 
 }  // namespace extensions