PPAPI: Force async callback invocation option.

ppapi/cpp/dev/file_io_dev.cc

Index: ppapi/cpp/dev/file_io_dev.cc
===================================================================
--- ppapi/cpp/dev/file_io_dev.cc	(revision 91178)
+++ ppapi/cpp/dev/file_io_dev.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -41,7 +41,7 @@
                          int32_t open_flags,
                          const CompletionCallback& cc) {
   if (!has_interface<PPB_FileIO_Dev>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_FileIO_Dev>()->Open(
       pp_resource(), file_ref.pp_resource(), open_flags,
       cc.pp_completion_callback());
@@ -50,7 +50,7 @@
 int32_t FileIO_Dev::Query(PP_FileInfo_Dev* result_buf,
                           const CompletionCallback& cc) {
   if (!has_interface<PPB_FileIO_Dev>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_FileIO_Dev>()->Query(
       pp_resource(), result_buf, cc.pp_completion_callback());
 }
@@ -59,7 +59,7 @@
                           PP_Time last_modified_time,
                           const CompletionCallback& cc) {
   if (!has_interface<PPB_FileIO_Dev>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_FileIO_Dev>()->Touch(
       pp_resource(), last_access_time, last_modified_time,
       cc.pp_completion_callback());
@@ -70,7 +70,7 @@
                          int32_t bytes_to_read,
                          const CompletionCallback& cc) {
   if (!has_interface<PPB_FileIO_Dev>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_FileIO_Dev>()->Read(pp_resource(),
       offset, buffer, bytes_to_read, cc.pp_completion_callback());
 }
@@ -80,7 +80,7 @@
                           int32_t bytes_to_write,
                           const CompletionCallback& cc) {
   if (!has_interface<PPB_FileIO_Dev>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_FileIO_Dev>()->Write(
       pp_resource(), offset, buffer, bytes_to_write,
       cc.pp_completion_callback());
@@ -89,14 +89,14 @@
 int32_t FileIO_Dev::SetLength(int64_t length,
                           const CompletionCallback& cc) {
   if (!has_interface<PPB_FileIO_Dev>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_FileIO_Dev>()->SetLength(
       pp_resource(), length, cc.pp_completion_callback());
 }
 
 int32_t FileIO_Dev::Flush(const CompletionCallback& cc) {
   if (!has_interface<PPB_FileIO_Dev>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_FileIO_Dev>()->Flush(
       pp_resource(), cc.pp_completion_callback());
 }