[Async][WIP] Call FrameLoader::checkCompleted() asynchronously to avoid sync body.onload()

third_party/WebKit/Source/web/tests/FrameTestHelpers.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 275 matching lines @@
     return webViewImpl();
 }
 
 void WebViewHelper::reset()
 {
     if (m_webViewWidget) {
         m_webViewWidget->close();
         m_webViewWidget = nullptr;
     }
     if (m_webView) {
+        // Loading completion is handled asynchronously
+        // (FrameLoader::checkCompleted()), so we call runPendingTasks() here
+        // to make sure loading is completed and
+        // the ASSERT() in the following line is successful.
+        testing::runPendingTasks();
         ASSERT(m_webView->mainFrame()->isWebRemoteFrame() || !testClientForFrame(m_webView->mainFrame())->isLoading());
         m_webView->willCloseLayerTreeView();
         m_webView->close();
         m_webView = nullptr;
     }
 }
 
 void WebViewHelper::resize(WebSize size)
 {
     m_testWebViewClient->clearAnimationScheduled();
@@ skipping 59 matching lines @@
 }
 
 void TestWebViewClient::initializeLayerTreeView()
 {
     m_layerTreeView = adoptPtr(Platform::current()->unitTestSupport()->createLayerTreeViewForTesting());
     ASSERT(m_layerTreeView);
 }
 
 } // namespace FrameTestHelpers
 } // namespace blink