Kill worker process by way of a sync IPC message before it cleans up.

content/common/worker_messages.h

Index: content/common/worker_messages.h
diff --git a/content/common/worker_messages.h b/content/common/worker_messages.h
index 6f20461ec3ed181313aa853c39ed0324be2425a2..ff84cd536b246f63d4999c25308bdc2d858c8088 100644
--- a/content/common/worker_messages.h
+++ b/content/common/worker_messages.h
@@ -142,6 +142,12 @@ IPC_SYNC_MESSAGE_CONTROL3_1(WorkerProcessHostMsg_AllowIndexedDB,
                             string16 /* database name */,
                             bool /* result */)
 
+// Sent by the worker process to request being killed.
+IPC_SYNC_MESSAGE_CONTROL2_1(WorkerProcessHostMsg_ForceKillWorker,
+                            int /* worker_route_id */,
+                            base::ProcessHandle /* worker process handle */,
+                            bool /* result */)

[michaeln, 2013/09/12 02:03:20]

You don't need the route_id or handl params for this message. The browser
process knows exactly which child process to terminate based on who sent it.

[meacer, 2013/09/16 21:40:42]

Done.

+
 //-----------------------------------------------------------------------------
 // Worker messages
 // These are messages sent from the renderer process to the worker process.