Create compositor animations for effect animations in SPv2.

third_party/WebKit/Source/core/paint/PaintPropertyTreeUpdateTests.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/html/HTMLIFrameElement.h"
 #include "core/paint/PaintPropertyTreeBuilderTest.h"
 #include "core/paint/PaintPropertyTreePrinter.h"
 
 namespace blink {
 
@@ skipping 448 matching lines @@
   const ObjectPaintProperties* properties =
       target->layoutObject()->paintProperties();
   EXPECT_TRUE(properties->transform()->hasDirectCompositingReasons());
 
   // Removing the animation should remove the transform node.
   target->removeAttribute(HTMLNames::classAttr);
   document().view()->updateAllLifecyclePhases();
   EXPECT_EQ(nullptr, properties->transform());
 }
 
+TEST_P(PaintPropertyTreeUpdateTest,
+       EffectNodeWithAnimationLosesNodeWhenAnimationRemoved) {
+  setBodyInnerHTML(
+      "<style>"
+      "div {"
+      "  width: 100px;"
+      "  height: 100px;"
+      "  background-color: red;"
+      "} "
+      ".animate {"
+      "  animation-name: test;"
+      "  animation-duration: 4s;"
+      "}"
+      "@keyframes test {"
+      "  from { opacity: 0.0;}"
+      "  to { opacity: 1.0;}"
+      "}"
+      "</style>"
+      "<div id='target' class='animate'></div>");
+  Element* target = document().getElementById("target");
+  const ObjectPaintProperties* properties =
+      target->layoutObject()->paintProperties();
+  EXPECT_TRUE(properties->effect()->hasDirectCompositingReasons());
+
+  // Removing the animation should remove the effect node.
+  target->removeAttribute(HTMLNames::classAttr);
+  document().view()->updateAllLifecyclePhases();
+  EXPECT_EQ(nullptr, properties->effect());
+}
+
 }  // namespace blink