PPAPI: Force async callback invocation option.

ppapi/cpp/url_loader.cc

-// 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.
 
 #include "ppapi/cpp/url_loader.h"
 
 #include "ppapi/c/ppb_url_loader.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/cpp/common.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/cpp/dev/file_ref_dev.h"
@@ skipping 30 matching lines @@
   PassRefFromConstructor(get_interface<PPB_URLLoader>()->Create(
       instance->pp_instance()));
 }
 
 URLLoader::URLLoader(const URLLoader& other) : Resource(other) {
 }
 
 int32_t URLLoader::Open(const URLRequestInfo& request_info,
                         const CompletionCallback& cc) {
   if (!has_interface<PPB_URLLoader>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_URLLoader>()->Open(pp_resource(),
                                               request_info.pp_resource(),
                                               cc.pp_completion_callback());
 }
 
 int32_t URLLoader::FollowRedirect(const CompletionCallback& cc) {
   if (!has_interface<PPB_URLLoader>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_URLLoader>()->FollowRedirect(
       pp_resource(), cc.pp_completion_callback());
 }
 
 bool URLLoader::GetUploadProgress(int64_t* bytes_sent,
                                   int64_t* total_bytes_to_be_sent) const {
   if (!has_interface<PPB_URLLoader>())
     return false;
   return PPBoolToBool(get_interface<PPB_URLLoader>()->GetUploadProgress(
       pp_resource(), bytes_sent, total_bytes_to_be_sent));
@@ skipping 14 matching lines @@
     return URLResponseInfo();
   return URLResponseInfo(URLResponseInfo::PassRef(),
                          get_interface<PPB_URLLoader>()->GetResponseInfo(
                              pp_resource()));
 }
 
 int32_t URLLoader::ReadResponseBody(void* buffer,
                                     int32_t bytes_to_read,
                                     const CompletionCallback& cc) {
   if (!has_interface<PPB_URLLoader>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_URLLoader>()->ReadResponseBody(
       pp_resource(), buffer, bytes_to_read, cc.pp_completion_callback());
 }
 
 int32_t URLLoader::FinishStreamingToFile(const CompletionCallback& cc) {
   if (!has_interface<PPB_URLLoader>())
-    return PP_ERROR_NOINTERFACE;
+    return cc.MayForce(PP_ERROR_NOINTERFACE);
   return get_interface<PPB_URLLoader>()->FinishStreamingToFile(
       pp_resource(), cc.pp_completion_callback());
 }
 
 void URLLoader::Close() {
   if (!has_interface<PPB_URLLoader>())
     return;
   get_interface<PPB_URLLoader>()->Close(pp_resource());
 }
 
 }  // namespace pp