[DevTools] Don't mark scripts from V8LazyEventListener as internal

third_party/WebKit/LayoutTests/http/tests/inspector-protocol/resources/protocol-test.html

Index: third_party/WebKit/LayoutTests/http/tests/inspector-protocol/resources/protocol-test.html
diff --git a/third_party/WebKit/LayoutTests/http/tests/inspector-protocol/resources/protocol-test.html b/third_party/WebKit/LayoutTests/http/tests/inspector-protocol/resources/protocol-test.html
index fc3cbd3a0e8771ae6cde90272608ac6041daface..1c1d9eda5b4900bf4b5a7a95dc071af1f96d35cb 100644
--- a/third_party/WebKit/LayoutTests/http/tests/inspector-protocol/resources/protocol-test.html
+++ b/third_party/WebKit/LayoutTests/http/tests/inspector-protocol/resources/protocol-test.html
@@ -83,6 +83,17 @@ InspectorTest.sendCommandPromise = function(method, params)
     return promise;
 }
 
+InspectorTest.waitForEventPromise = function(eventName)
+{
+    return new Promise(fulfill => InspectorTest.eventHandler[eventName] = fullfillAndClearListener.bind(null, fulfill));
+
+    function fullfillAndClearListener(fulfill, result)
+    {
+        fulfill(result);
+        delete InspectorTest.eventHandler[eventName];
+    }
+}
+
 InspectorTest.domUndo = function(callback)
 {
     InspectorTest.sendCommandOrDie("DOM.undo", {}, callback);