Initial implementation of WorkletAnimation

third_party/WebKit/Source/core/animation/WorkletAnimationController.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 "core/animation/WorkletAnimationController.h"
+
+#include "core/animation/WorkletAnimationBase.h"
+
+namespace blink {
+
+WorkletAnimationController::WorkletAnimationController() {}
+
+WorkletAnimationController::~WorkletAnimationController() {}
+
+void WorkletAnimationController::RegisterAnimation(
+    WorkletAnimationBase* animation) {
+  animations_.insert(animation);

[majidvp, 2017/06/06 16:04:27]

nit: may be a good idea to add a DCHECK for animation not already
existing in the list.
This will help avoid attaching animation multiple times by mistake.

[smcgruer, 2017/06/07 18:23:24]

Done.

+}
+
+void WorkletAnimationController::DeregisterAnimation(
+    WorkletAnimationBase* animation) {
+  animations_.erase(animation);
+}
+
+void WorkletAnimationController::Update() {
+  for (const auto& animation : animations_) {
+    animation->Update();
+  }
+}
+
+DEFINE_TRACE(WorkletAnimationController) {
+  visitor->Trace(animations_);
+}
+
+}  // namespace