Pepper: Move FileRef to the "new" resource proxy.

ppapi/proxy/file_io_resource.cc

Index: ppapi/proxy/file_io_resource.cc
diff --git a/ppapi/proxy/file_io_resource.cc b/ppapi/proxy/file_io_resource.cc
index 7d98356994abc5765634ee5b997d5f10fbdd402d..fb85144630fef3c83ee884a06a5a84046aaf82fc 100644
--- a/ppapi/proxy/file_io_resource.cc
+++ b/ppapi/proxy/file_io_resource.cc
@@ -16,7 +16,6 @@
 
 using ppapi::thunk::EnterResourceNoLock;
 using ppapi::thunk::PPB_FileIO_API;
-using ppapi::thunk::PPB_FileRef_API;
 
 namespace {
 
@@ -45,7 +44,7 @@ PPB_FileIO_API* FileIOResource::AsPPB_FileIO_API() {
 int32_t FileIOResource::Open(PP_Resource file_ref,
                              int32_t open_flags,
                              scoped_refptr<TrackedCallback> callback) {
-  EnterResourceNoLock<PPB_FileRef_API> enter(file_ref, true);
+  EnterResourceNoLock<thunk::PPB_FileRef_API> enter(file_ref, true);
   if (enter.failed())
     return PP_ERROR_BADRESOURCE;
 
@@ -56,7 +55,7 @@ int32_t FileIOResource::Open(PP_Resource file_ref,
 
   Call<PpapiPluginMsg_FileIO_OpenReply>(RENDERER,
       PpapiHostMsg_FileIO_Open(
-          enter.resource()->host_resource().host_resource(),
+          file_ref,
           open_flags),
       base::Bind(&FileIOResource::OnPluginMsgOpenFileComplete, this,
                  callback));