Add Query() support to FileRef

webkit/plugins/ppapi/ppb_file_ref_impl.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 "webkit/plugins/ppapi/ppb_file_ref_impl.h"
 
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/escape.h"
@@ skipping 275 matching lines @@
 
 bool PPB_FileRef_Impl::HasValidFileSystem() const {
   return file_system_ && file_system_->opened();
 }
 
 bool PPB_FileRef_Impl::IsValidNonExternalFileSystem() const {
   return file_system_ && file_system_->opened() &&
       file_system_->type() != PP_FILESYSTEMTYPE_EXTERNAL;
 }
 
+int32_t PPB_FileRef_Impl::Query(PP_FileInfo* info,
+                                scoped_refptr<TrackedCallback> callback) {
+  if (!IsValidNonExternalFileSystem())
+    return PP_ERROR_NOACCESS;

[dmichael (off chromium), 2013/03/21 22:11:29]

Don't we want to support Query for external file systems too? I think
FileIO::Query does.

+
+  PluginInstance* plugin_instance = ResourceHelper::GetPluginInstance(this);
+  if (!plugin_instance)
+    return PP_ERROR_FAILED;
+
+  if (!plugin_instance->delegate()->Query(
+          GetFileSystemURL(),
+          new FileCallbacks(this, callback, info, file_system_)))
+    return PP_ERROR_FAILED;
+
+  return PP_OK_COMPLETIONPENDING;
+}
+
 }  // namespace ppapi
 }  // namespace webkit