Not creating ClientUsageTracker for unsupported storage type.

content/browser/indexed_db/indexed_db_quota_client.cc

 // Copyright (c) 2012 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_quota_client.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "content/browser/indexed_db/indexed_db_context_impl.h"
@@ skipping 157 matching lines @@
   }
 
   base::PostTaskAndReplyWithResult(
       indexed_db_context_->TaskRunner(),
       FROM_HERE,
       base::Bind(
           &DeleteOriginDataOnIndexedDBThread, indexed_db_context_, origin),
       callback);
 }
 
+bool IndexedDBQuotaClient::DoesSupport(quota::StorageType type) const {
+  return type == quota::kStorageTypeTemporary;
+}
+
 }  // namespace content