[IndexedDB] Transaction limitting

content/browser/indexed_db/indexed_db_transaction_coordinator.h

Index: content/browser/indexed_db/indexed_db_transaction_coordinator.h
diff --git a/content/browser/indexed_db/indexed_db_transaction_coordinator.h b/content/browser/indexed_db/indexed_db_transaction_coordinator.h
index 357b464eaddcc86bcb96a5e17f65dd6f44126cec..8d7e885b112a6a876efbf76f72f5898c84fb3ff2 100644
--- a/content/browser/indexed_db/indexed_db_transaction_coordinator.h
+++ b/content/browser/indexed_db/indexed_db_transaction_coordinator.h
@@ -43,9 +43,12 @@ class CONTENT_EXPORT IndexedDBTransactionCoordinator {
  private:
   friend class IndexedDBTransactionCoordinatorTest;
 
+  void RecordMetrics() const;
+
   void ProcessQueuedTransactions();
   bool CanStartTransaction(IndexedDBTransaction* const transaction,
-                           const std::set<int64_t>& locked_scope) const;
+                           const std::set<int64_t>& locked_scope,
+                           size_t num_started_txns) const;
 
   // Transactions in different states are grouped below.
   // list_set is used to provide stable ordering; required by spec