// Informs the browser that the Metro window has been activated.
IPC_MESSAGE_CONTROL0(MetroViewerHostMsg_WindowActivated);
+// Informs the browser that the user has completed an edge gesture.
+IPC_MESSAGE_CONTROL0(MetroViewerHostMsg_EdgeGesture)
+
IPC_MESSAGE_CONTROL4(MetroViewerHostMsg_TouchDown,
int32, /* x-coordinate */
int32, /* y-coordinate */