Make IndexedDBConnection IDs independent from the IPC database ID.

content/child/indexed_db/indexed_db_dispatcher.cc

 // 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_dispatcher.h"
 
 #include <utility>
 
 #include "base/format_macros.h"
 #include "base/lazy_instance.h"
@@ skipping 629 matching lines @@
   if (message.empty())
     callbacks->onError(WebIDBDatabaseError(code));
   else
     callbacks->onError(WebIDBDatabaseError(code, message));
   pending_callbacks_.Remove(ipc_callbacks_id);
   cursor_transaction_ids_.erase(ipc_callbacks_id);
 }
 
 void IndexedDBDispatcher::OnDatabaseChanges(
     int32_t ipc_thread_id,
-    int32_t ipc_database_id,
     const IndexedDBMsg_ObserverChanges& changes) {
   DCHECK_EQ(ipc_thread_id, CurrentWorkerId());
   std::vector<WebIDBObservation> observations(
       ConvertObservations(changes.observations));
   for (auto& it : changes.observation_index) {
     WebIDBObserver* observer = observers_.Lookup(it.first);
     // An observer can be removed from the renderer, but still exist in the
     // backend. Moreover, observer might have recorded some changes before being
     // removed from the backend and thus, have its id be present in changes.
     if (!observer)
       continue;
     observer->onChange(observations, std::move(it.second));
   }
 }
 
 void IndexedDBDispatcher::ResetCursorPrefetchCaches(
     int64_t transaction_id,
     int32_t ipc_exception_cursor_id) {
   typedef std::map<int32_t, WebIDBCursorImpl*>::iterator Iterator;
   for (Iterator i = cursors_.begin(); i != cursors_.end(); ++i) {
     if (i->first == ipc_exception_cursor_id ||
         i->second->transaction_id() != transaction_id)
       continue;
     i->second->ResetPrefetchCache();
   }
 }
 
 }  // namespace content