IndexedDB: Ignore open/delete requests from terminated renderers.

content/browser/indexed_db/indexed_db_callbacks.h

Index: content/browser/indexed_db/indexed_db_callbacks.h
diff --git a/content/browser/indexed_db/indexed_db_callbacks.h b/content/browser/indexed_db/indexed_db_callbacks.h
index edca21931df9b909d657b866b0e2e4c2ff7dcca2..088c16333059ae3f2b0b323441b8756a0e996775 100644
--- a/content/browser/indexed_db/indexed_db_callbacks.h
+++ b/content/browser/indexed_db/indexed_db_callbacks.h
@@ -107,6 +107,10 @@ class CONTENT_EXPORT IndexedDBCallbacks
   // 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: