Pepper: Stop using SRPC for irt_open_resource().

components/nacl/renderer/manifest_service_channel.cc

Index: components/nacl/renderer/manifest_service_channel.cc
diff --git a/components/nacl/renderer/manifest_service_channel.cc b/components/nacl/renderer/manifest_service_channel.cc
index cb397038f82760ea310db0e093078bca4035ea41..47d051c250741acf85352cb38eff89bcd44265d2 100644
--- a/components/nacl/renderer/manifest_service_channel.cc
+++ b/components/nacl/renderer/manifest_service_channel.cc
@@ -11,6 +11,7 @@
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_sync_channel.h"
 #include "ppapi/c/pp_errors.h"
+#include "ppapi/c/ppb_file_io.h"
 #include "ppapi/proxy/ppapi_messages.h"
 
 namespace nacl {
@@ -86,12 +87,14 @@ void ManifestServiceChannel::OnOpenResource(
 #if !defined(OS_WIN)
 void ManifestServiceChannel::DidOpenResource(
     IPC::Message* reply, base::File file) {
+  ppapi::proxy::SerializedHandle h;
+  if (file.IsValid()) {
+    h.set_file_handle(base::FileDescriptor(file.Pass()),
+                                           PP_FILEOPENFLAG_READ,
+                                           0);
+  }
   // Here, PlatformFileForTransit is alias of base::FileDescriptor.
-  PpapiHostMsg_OpenResource::WriteReplyParams(
-      reply,
-      ppapi::proxy::SerializedHandle(
-          ppapi::proxy::SerializedHandle::FILE,
-          base::FileDescriptor(file.Pass())));
+  PpapiHostMsg_OpenResource::WriteReplyParams(reply, h);
   Send(reply);
 }
 #endif