1 files changed, 7 insertions, 0 deletions
diff --git a/chrome/common/ipc_sync_message.cc b/chrome/common/ipc_sync_message.cc
index 43d6d5e..8dc75c4 100644
--- a/chrome/common/ipc_sync_message.cc
+++ b/chrome/common/ipc_sync_message.cc
@@ -38,6 +38,8 @@ namespace IPC {
 uint32 SyncMessage::next_id_ = 0;
 #define kSyncMessageHeaderSize 4
 
+// A dummy handle used by EnableMessagePumping.
+HANDLE dummy_event = ::CreateEvent(NULL, TRUE, TRUE, NULL);
 
 SyncMessage::SyncMessage(
     int32 routing_id,
@@ -63,6 +65,11 @@ MessageReplyDeserializer* SyncMessage::GetReplyDeserializer() {
   return rv;
 }
 
+void SyncMessage::EnableMessagePumping() {
+  DCHECK(!pump_messages_event_);
+  set_pump_messages_event(dummy_event);
+}
+
 bool SyncMessage::IsMessageReplyTo(const Message& msg, int request_id) {
   if (!msg.is_reply())
     return false;