Initial implementation of WorkletAnimation

third_party/WebKit/Source/modules/compositorworker/WorkletAnimationTest.cpp

+// Copyright 2017 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 "modules/compositorworker/WorkletAnimation.h"
+
+#include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/V8BindingForCore.h"
+#include "bindings/core/v8/V8BindingForTesting.h"
+#include "bindings/core/v8/V8ObjectBuilder.h"
+#include "bindings/core/v8/serialization/SerializedScriptValue.h"
+#include "core/animation/KeyframeEffectReadOnly.h"
+#include "core/frame/Settings.h"
+#include "core/testing/DummyPageHolder.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+TEST(WorkletAnimationTest, CreateWorkletAnimation) {

[alancutter (OOO until 2018), 2017/06/26 11:57:02]

Please add tests like this under LayoutTests/virtual/threaded. This unit test is
okay to keep.

You'll want to add a ref test to check pixel outputs to ensure compositor
animations are actually taking effect.
virtual/threaded/animations/composited-animation-style-update.html is an example
of this.

+  V8TestingScope scope;
+  DummyExceptionStateForTesting exception_state;
+
+  const HeapVector<Member<KeyframeEffectReadOnly>> effects;
+  HeapVector<DocumentTimelineOrScrollTimeline> timelines;
+
+  V8ObjectBuilder builder(scope.GetScriptState());
+  builder.AddString("my_prop", "value");
+  v8::Local<v8::Object> worklet_options = builder.V8Value();
+
+  SerializedScriptValue::SerializeOptions serialize_options;
+  RefPtr<SerializedScriptValue> serialized_worklet_options =
+      SerializedScriptValue::Serialize(scope.GetIsolate(), worklet_options,
+                                       serialize_options, exception_state);
+  ASSERT_FALSE(exception_state.HadException());
+
+  WorkletAnimation* animation = WorkletAnimation::Create(
+      "Test", effects, timelines, std::move(serialized_worklet_options),
+      exception_state);
+  ASSERT_TRUE(animation);
+}
+
+}  // namespace blink