content: Cleanup class/struct forward declarations

content/browser/indexed_db/indexed_db_dispatcher_host.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_dispatcher_host.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 17 matching lines @@
 #include "content/public/browser/user_metrics.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/result_codes.h"
 #include "storage/browser/blob/blob_data_builder.h"
 #include "storage/browser/blob/blob_storage_context.h"
 #include "storage/browser/database/database_util.h"
 #include "storage/common/database/database_identifier.h"
 #include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBDatabaseException.h"
 #include "url/origin.h"
 
-using storage::DatabaseUtil;
-using blink::WebIDBKey;
-
 namespace content {
 
 namespace {
 
 const char kInvalidOrigin[] = "Origin is invalid";
 
 bool IsValidOrigin(const url::Origin& origin) {
   return !origin.unique();
 }
 
@@ skipping 271 matching lines @@
   DCHECK(indexed_db_context_->TaskRunner()->RunsTasksOnCurrentThread());
   if (committed) {
     context()->TransactionComplete(
         transaction_origin_map_[host_transaction_id]);
   }
   transaction_origin_map_.erase(host_transaction_id);
   transaction_size_map_.erase(host_transaction_id);
 }
 
 }  // namespace content