Send IndexedDB observations through IDBDatabaseCallbacks.

content/child/indexed_db/indexed_db_message_filter.cc

Index: content/child/indexed_db/indexed_db_message_filter.cc
diff --git a/content/child/indexed_db/indexed_db_message_filter.cc b/content/child/indexed_db/indexed_db_message_filter.cc
deleted file mode 100644
index a1d4222e1cf13f55570ccfbf33dc73a9686f9bd4..0000000000000000000000000000000000000000
--- a/content/child/indexed_db/indexed_db_message_filter.cc
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "content/child/indexed_db/indexed_db_message_filter.h"
-
-#include "content/child/indexed_db/indexed_db_dispatcher.h"
-#include "content/child/thread_safe_sender.h"
-#include "content/common/indexed_db/indexed_db_messages.h"
-
-namespace content {
-
-IndexedDBMessageFilter::IndexedDBMessageFilter(
-    ThreadSafeSender* thread_safe_sender)
-    : WorkerThreadMessageFilter(thread_safe_sender) {
-}
-
-IndexedDBMessageFilter::~IndexedDBMessageFilter() {}
-
-bool IndexedDBMessageFilter::ShouldHandleMessage(
-    const IPC::Message& msg) const {
-  return IPC_MESSAGE_CLASS(msg) == IndexedDBMsgStart;
-}
-
-void IndexedDBMessageFilter::OnFilteredMessageReceived(
-    const IPC::Message& msg) {
-  IndexedDBDispatcher::ThreadSpecificInstance()->OnMessageReceived(msg);
-}
-
-bool IndexedDBMessageFilter::GetWorkerThreadIdForMessage(
-    const IPC::Message& msg,
-    int* ipc_thread_id) {
-  return base::PickleIterator(msg).ReadInt(ipc_thread_id);
-}
-
-}  // namespace content