PPAPI: Force async callback invocation option.

remoting/client/plugin/pepper_port_allocator_session.cc

 // 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 "remoting/client/plugin/pepper_port_allocator_session.h"
 
 #include <map>
 
 #include "base/callback.h"
 #include "base/logging.h"
@@ skipping 103 matching lines @@
     // Grant access to external origins.
     const struct PPB_URLLoaderTrusted* trusted_loader_interface =
         reinterpret_cast<const PPB_URLLoaderTrusted*>(
             PPP_GetBrowserInterface(PPB_URLLOADERTRUSTED_INTERFACE));
     trusted_loader_interface->GrantUniversalAccess(
         loader_.pp_resource());
 
     fetch_callback_.reset(fetch_callback);
 
     pp::CompletionCallback callback =
-        callback_factory_.NewCallback(&PepperURLFetcher::DidOpen);
+        callback_factory_.NewOptionalCallback(&PepperURLFetcher::DidOpen);
     int rv = loader_.Open(request, callback);
     if (rv != PP_OK_COMPLETIONPENDING)
       callback.Run(rv);
   }
 
  private:
   void ReadMore() {
     pp::CompletionCallback callback =
-        callback_factory_.NewCallback(&PepperURLFetcher::DidRead);
+        callback_factory_.NewOptionalCallback(&PepperURLFetcher::DidRead);
     int rv = loader_.ReadResponseBody(buf_, sizeof(buf_), callback);
     if (rv != PP_OK_COMPLETIONPENDING)
       callback.Run(rv);
   }
 
   void DidOpen(int32_t result) {
     if (result == PP_OK) {
       ReadMore();
     } else {
       DidFinish(result);
@@ skipping 267 matching lines @@
   config->AddRelay(ports, 0.0f);
   ConfigReady(config);
 }
 
 PortAllocatorSessionFactory* CreatePepperPortAllocatorSessionFactory(
     ChromotingInstance* instance) {
   return new SessionFactory(instance, MessageLoop::current());
 }
 
 }  // namespace remoting