Pepper: Move FileRef to the "new" resource proxy.

ppapi/proxy/file_io_resource.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 "ppapi/proxy/file_io_resource.h"
 
 #include "base/bind.h"
 #include "base/task_runner_util.h"
 #include "ipc/ipc_message.h"
 #include "ppapi/c/pp_errors.h"
@@ skipping 93 matching lines @@
     NOTREACHED();
     return PP_ERROR_FAILED;
   }
   file_system_type_ = type;
 
   int32_t rv = state_manager_.CheckOperationState(
       FileIOStateManager::OPERATION_EXCLUSIVE, false);
   if (rv != PP_OK)
     return rv;
 
+  // Take a reference on the FileRef resource while we're opening the file; we
+  // don't want the plugin destroying it during the Open operation.
+  file_ref_ = enter.resource();
+
   Call<PpapiPluginMsg_FileIO_OpenReply>(RENDERER,
       PpapiHostMsg_FileIO_Open(
-          enter.resource()->host_resource().host_resource(),
+          file_ref,
           open_flags),
       base::Bind(&FileIOResource::OnPluginMsgOpenFileComplete, this,
                  callback));
 
   state_manager_.SetPendingOperation(FileIOStateManager::OPERATION_EXCLUSIVE);
   return PP_OK_COMPLETIONPENDING;
 }
 
 int32_t FileIOResource::Query(PP_FileInfo* info,
                               scoped_refptr<TrackedCallback> callback) {
@@ skipping 276 matching lines @@
   // operation, assuming there are no other pending operations.
   state_manager_.SetOperationFinished();
   callback->Run(params.result());
 }
 
 void FileIOResource::OnPluginMsgOpenFileComplete(
     scoped_refptr<TrackedCallback> callback,
     const ResourceMessageReplyParams& params) {
   DCHECK(state_manager_.get_pending_operation() ==
          FileIOStateManager::OPERATION_EXCLUSIVE);
+
+  // Release the FileRef resource.
+  file_ref_ = NULL;
   if (params.result() == PP_OK)
     state_manager_.SetOpenSucceed();
 
   int32_t result = params.result();
   IPC::PlatformFileForTransit transit_file;
   if ((result == PP_OK) && params.TakeFileHandleAtIndex(0, &transit_file))
     file_handle_ = IPC::PlatformFileForTransitToPlatformFile(transit_file);
   // End this operation now, so the user's callback can execute another FileIO
   // operation, assuming there are no other pending operations.
   state_manager_.SetOperationFinished();
@@ skipping 19 matching lines @@
   *output_handle = IPC::PlatformFileForTransitToPlatformFile(transit_file);
 
   // End this operation now, so the user's callback can execute another FileIO
   // operation, assuming there are no other pending operations.
   state_manager_.SetOperationFinished();
   callback->Run(result);
 }
 
 }  // namespace proxy
 }  // namespace ppapi