IndexedDBFactory now ForceCloses databases.

content/browser/indexed_db/indexed_db_database.cc

 // Copyright (c) 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/browser/indexed_db/indexed_db_database.h"
 
 #include <math.h>
 #include <set>
 
 #include "base/auto_reset.h"
@@ skipping 1571 matching lines @@
   }
   metadata_.version = kNoStringVersion;
   metadata_.id = kInvalidId;
   metadata_.int_version = IndexedDBDatabaseMetadata::NO_INT_VERSION;
   metadata_.object_stores.clear();
   callbacks->OnSuccess();
   if (factory_)
     factory_->DatabaseDeleted(identifier_);
 }
 
+void IndexedDBDatabase::ForceClose() {
+  // IndexedDBConnection::ForceClose() may delete this database, so hold ref.
+  scoped_refptr<IndexedDBDatabase> protect(this);
+  while (!connections_.empty())

[jsbell, 2014/01/06 22:33:50]

If we ever break IndexedDBConnect::ForceClose() so it doesn't remove the
connection, this would hang unhelpfully. Maybe change to iterating and then
DCHECK that connections_ is empty?

[cmumford, 2014/01/09 00:48:25]

Done.

+    (*connections_.begin())->ForceClose();
+}
+
 void IndexedDBDatabase::Close(IndexedDBConnection* connection, bool forced) {
   DCHECK(connections_.count(connection));
   DCHECK(connection->IsConnected());
   DCHECK(connection->database() == this);
 
   // Abort outstanding transactions from the closing connection. This
   // can not happen if the close is requested by the connection itself
   // as the front-end defers the close until all transactions are
   // complete, but can occur on process termination or forced close.
   {
@@ skipping 58 matching lines @@
     const base::string16& previous_version,
     int64 previous_int_version,
     IndexedDBTransaction* transaction) {
   IDB_TRACE("IndexedDBDatabase::VersionChangeAbortOperation");
   DCHECK(!transaction);
   metadata_.version = previous_version;
   metadata_.int_version = previous_int_version;
 }
 
 }  // namespace content