CC AnimationHost: Fix LinkHighlights detach scope.

third_party/WebKit/Source/web/LinkHighlightImplTest.cpp

 /*
  * Copyright (C) 2012 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:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 151 matching lines @@
     ASSERT_TRUE(highlightLayer);
     EXPECT_TRUE(highlightLayer->linkHighlight(0));
 
     touchNode->remove(IGNORE_EXCEPTION);
     webViewImpl->updateAllLifecyclePhases();
     ASSERT_EQ(0U, highlightLayer->numLinkHighlights());
 
     Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
 }
 
+TEST(LinkHighlightImplTest, resetLayerTreeView)
+{
+    OwnPtr<FakeCompositingWebViewClient> webViewClient = adoptPtr(new FakeCompositingWebViewClient());
+    webViewClient->setUseCompositorAnimationTimelines(true);
+
+    const std::string baseURL("http://www.test.com/");
+    const std::string fileName("test_touch_link_highlight.html");
+
+    URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(baseURL.c_str()), WebString::fromUTF8("test_touch_link_highlight.html"));
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    WebViewImpl* webViewImpl = webViewHelper.initializeAndLoad(baseURL + fileName, true, 0, webViewClient.get());
+
+    int pageWidth = 640;
+    int pageHeight = 480;
+    webViewImpl->resize(WebSize(pageWidth, pageHeight));
+    webViewImpl->updateAllLifecyclePhases();
+
+    WebGestureEvent touchEvent;
+    touchEvent.type = WebInputEvent::GestureShowPress;
+    touchEvent.sourceDevice = WebGestureDeviceTouchscreen;
+    touchEvent.x = 20;
+    touchEvent.y = 20;
+
+    GestureEventWithHitTestResults targetedEvent = getTargetedEvent(webViewImpl, touchEvent);
+    Node* touchNode = webViewImpl->bestTapNode(targetedEvent);
+    ASSERT_TRUE(touchNode);
+
+    webViewImpl->enableTapHighlightAtPoint(targetedEvent);
+    ASSERT_TRUE(webViewImpl->linkHighlight(0));
+
+    GraphicsLayer* highlightLayer = webViewImpl->linkHighlight(0)->currentGraphicsLayerForTesting();
+    ASSERT_TRUE(highlightLayer);
+    EXPECT_TRUE(highlightLayer->linkHighlight(0));
+
+    // Mimic the logic from RenderWidget::Close:
+    webViewImpl->willCloseLayerTreeView();
+    webViewClient.clear();
+    webViewHelper.reset();
+
+    Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
+}
+
 TEST(LinkHighlightImplTest, multipleHighlights)
 {
     FrameTestHelpers::UseMockScrollbarSettings m_mockScrollbarSettings;
 
     const std::string baseURL("http://www.test.com/");
     const std::string fileName("test_touch_link_highlight.html");
 
     URLTestHelpers::registerMockedURLFromBaseURL(WebString::fromUTF8(baseURL.c_str()), WebString::fromUTF8("test_touch_link_highlight.html"));
     FrameTestHelpers::WebViewHelper webViewHelper;
     WebViewImpl* webViewImpl = webViewHelper.initializeAndLoad(baseURL + fileName, true, 0, compositingWebViewClient());
@@ skipping 14 matching lines @@
     IntRect boundingBox(touchEvent.x - touchEvent.data.tap.width / 2, touchEvent.y - touchEvent.data.tap.height / 2, touchEvent.data.tap.width, touchEvent.data.tap.height);
     findGoodTouchTargets(boundingBox, webViewImpl->mainFrameImpl()->frame(), goodTargets, highlightNodes);
 
     webViewImpl->enableTapHighlights(highlightNodes);
     EXPECT_EQ(2U, webViewImpl->numLinkHighlights());
 
     Platform::current()->unitTestSupport()->unregisterAllMockedURLs();
 }
 
 } // namespace blink