Remove idb transaction callbacks onTimeout stuff that was removed from the spec.

content/renderer/indexed_db_dispatcher.cc

Index: content/renderer/indexed_db_dispatcher.cc
diff --git a/content/renderer/indexed_db_dispatcher.cc b/content/renderer/indexed_db_dispatcher.cc
index 06c2be03d2aa731c89356b7c211781b48c4191b8..ff48f9dcbdfa8a4114be2ba6f5054281306bedf3 100644
--- a/content/renderer/indexed_db_dispatcher.cc
+++ b/content/renderer/indexed_db_dispatcher.cc
@@ -55,7 +55,6 @@ bool IndexedDBDispatcher::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(IndexedDBMsg_CallbacksBlocked, OnBlocked)
     IPC_MESSAGE_HANDLER(IndexedDBMsg_TransactionCallbacksAbort, OnAbort)
     IPC_MESSAGE_HANDLER(IndexedDBMsg_TransactionCallbacksComplete, OnComplete)
-    IPC_MESSAGE_HANDLER(IndexedDBMsg_TransactionCallbacksTimeout, OnTimeout)
     IPC_MESSAGE_HANDLER(IndexedDBMsg_DatabaseCallbacksVersionChange,
                         OnVersionChange)
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -437,13 +436,6 @@ void IndexedDBDispatcher::OnComplete(int32 transaction_id) {
   pending_transaction_callbacks_.Remove(transaction_id);
 }
 
-void IndexedDBDispatcher::OnTimeout(int32 transaction_id) {
-  WebIDBTransactionCallbacks* callbacks =
-      pending_transaction_callbacks_.Lookup(transaction_id);
-  callbacks->onTimeout();
-  pending_transaction_callbacks_.Remove(transaction_id);
-}
-
 void IndexedDBDispatcher::OnVersionChange(int32 database_id,
                                           const string16& newVersion) {
   WebIDBDatabaseCallbacks* callbacks =