DevTools: prepare tests for Persistence2.0 release

third_party/WebKit/Source/devtools/front_end/persistence/Persistence.js

Index: third_party/WebKit/Source/devtools/front_end/persistence/Persistence.js
diff --git a/third_party/WebKit/Source/devtools/front_end/persistence/Persistence.js b/third_party/WebKit/Source/devtools/front_end/persistence/Persistence.js
index f2594adfbfdd5f6289d777c76ad87acd6f941043..a3e76fd66cd99148b08034046328c7e477c03ec3 100644
--- a/third_party/WebKit/Source/devtools/front_end/persistence/Persistence.js
+++ b/third_party/WebKit/Source/devtools/front_end/persistence/Persistence.js
@@ -32,6 +32,14 @@ Persistence.Persistence = class extends Common.Object {
   }
 
   /**
+   * @param {function(function(!Persistence.PersistenceBinding), function(!Persistence.PersistenceBinding)):{dispose: function()}} mappingFactory
+   */
+  _setMappingForTest(mappingFactory) {
+    this._mapping.dispose();
+    this._mapping = mappingFactory(this._validateBinding.bind(this), this._onBindingRemoved.bind(this));
+  }
+
+  /**
    * @param {!Persistence.PersistenceBinding} binding
    */
   _validateBinding(binding) {