Pepper: Simplify idl_thunk implementation.

ppapi/thunk/ppb_file_io_thunk.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.
 
-// From ppb_file_io.idl modified Mon Mar 18 13:58:22 2013.
+// From ppb_file_io.idl modified Tue Apr 16 11:25:44 2013.
 
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppb_file_io.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_file_io_api.h"
 #include "ppapi/thunk/ppb_instance_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 #include "ppapi/thunk/thunk.h"
@@ skipping 97 matching lines @@
   VLOG(4) << "PPB_FileIO::Flush()";
   EnterResource<PPB_FileIO_API> enter(file_io, callback, true);
   if (enter.failed())
     return enter.retval();
   return enter.SetResult(enter.object()->Flush(enter.callback()));
 }
 
 void Close(PP_Resource file_io) {
   VLOG(4) << "PPB_FileIO::Close()";
   EnterResource<PPB_FileIO_API> enter(file_io, true);
-  if (enter.succeeded())
-    enter.object()->Close();
+  if (enter.failed())
+    return;
+  enter.object()->Close();
 }
 
 int32_t ReadToArray(PP_Resource file_io,
                     int64_t offset,
                     int32_t max_read_length,
                     struct PP_ArrayOutput* output,
                     struct PP_CompletionCallback callback) {
   VLOG(4) << "PPB_FileIO::ReadToArray()";
   EnterResource<PPB_FileIO_API> enter(file_io, callback, true);
   if (enter.failed())
@@ skipping 36 matching lines @@
 const PPB_FileIO_1_0* GetPPB_FileIO_1_0_Thunk() {
   return &g_ppb_fileio_thunk_1_0;
 }
 
 const PPB_FileIO_1_1* GetPPB_FileIO_1_1_Thunk() {
   return &g_ppb_fileio_thunk_1_1;
 }
 
 }  // namespace thunk
 }  // namespace ppapi