attachment broker wip

win8/metro_driver/chrome_app_view_ash.h

Index: win8/metro_driver/chrome_app_view_ash.h
diff --git a/win8/metro_driver/chrome_app_view_ash.h b/win8/metro_driver/chrome_app_view_ash.h
index 9fd7c294dabeaeb31d942d69ef4efb0845b8bbb8..8f50e0271ff57b9eb14f657f175f34d5294df7e6 100644
--- a/win8/metro_driver/chrome_app_view_ash.h
+++ b/win8/metro_driver/chrome_app_view_ash.h
@@ -26,6 +26,7 @@ class FilePath;
 }
 
 namespace IPC {
+class AttachmentBroker;
 class Listener;
 class ChannelProxy;
 }
@@ -231,6 +232,9 @@ class ChromeAppViewAsh
   // The IPC channel IO thread.
   scoped_ptr<base::Thread> io_thread_;
 
+  // Broker for IPC attachments.
+  scoped_ptr<IPC::AttachmentBroker> attachment_broker_;
+
   // The channel to Chrome, in particular to the MetroViewerProcessHost.
   scoped_ptr<IPC::ChannelProxy> ui_channel_;