IndexedDB: Ignore open/delete requests from terminated renderers.

content/browser/indexed_db/indexed_db_callbacks.cc

Index: content/browser/indexed_db/indexed_db_callbacks.cc
diff --git a/content/browser/indexed_db/indexed_db_callbacks.cc b/content/browser/indexed_db/indexed_db_callbacks.cc
index 8ec899b7337334f28f8db9813bebaed259ba0869..8783d3b1049623997bd3145a5593259b8334a222 100644
--- a/content/browser/indexed_db/indexed_db_callbacks.cc
+++ b/content/browser/indexed_db/indexed_db_callbacks.cc
@@ -604,6 +604,12 @@ void IndexedDBCallbacks::OnSuccess() {
   dispatcher_host_ = NULL;
 }
 
+bool IndexedDBCallbacks::IsValid() const {
+  DCHECK(dispatcher_host_.get());
+
+  return dispatcher_host_->IsOpen();
+}
+
 void IndexedDBCallbacks::SetConnectionOpenStartTime(
     const base::TimeTicks& start_time) {
   connection_open_start_time_ = start_time;