IndexedDB: Ignore open/delete requests from terminated renderers.

content/browser/indexed_db/indexed_db_callbacks.h

 // 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.
 
 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CALLBACKS_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CALLBACKS_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 89 matching lines @@
   virtual void OnSuccess(const IndexedDBKey& key);
 
   // IndexedDBDatabase::Count
   // IndexedDBFactory::DeleteDatabase
   // IndexedDBDatabase::DeleteRange
   virtual void OnSuccess(int64_t value);
 
   // IndexedDBCursor::Continue / Advance (when complete)
   virtual void OnSuccess();
 
+  // Checks to see if the associated dispatcher host is still connected. If
+  // not this request can be dropped.
+  virtual bool IsValid() const;
+
   void SetConnectionOpenStartTime(const base::TimeTicks& start_time);
 
  protected:
   virtual ~IndexedDBCallbacks();
 
  private:
   void RegisterBlobsAndSend(const std::vector<IndexedDBBlobInfo>& blob_info,
                             const base::Closure& callback);
 
   friend class base::RefCounted<IndexedDBCallbacks>;
@@ skipping 17 matching lines @@
 
   // The "blocked" event should be sent at most once per request.
   bool sent_blocked_;
   base::TimeTicks connection_open_start_time_;
   DISALLOW_COPY_AND_ASSIGN(IndexedDBCallbacks);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CALLBACKS_H_