compositor-worker: cc->blink mutation plumbing

third_party/WebKit/Source/core/animation/CustomCompositorAnimationManager.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/animation/CustomCompositorAnimationManager.h"
+
+#include "core/dom/DOMNodeIds.h"
+#include "core/dom/Element.h"
+#include "core/dom/Node.h"
+#include "platform/TraceEvent.h"
+#include "platform/graphics/CompositorMutation.h"
+
+namespace blink {
+
+CustomCompositorAnimationManager::CustomCompositorAnimationManager()
+{
+}
+
+CustomCompositorAnimationManager::~CustomCompositorAnimationManager()
+{
+}
+
+void CustomCompositorAnimationManager::applyMutations(CompositorMutations* mutations)
+{
+    TRACE_EVENT0("compositor-worker", "CustomCompositorAnimationManager::applyMutations");
+    for (const auto& entry : mutations->map) {
+        int elementId = entry.key;
+        const CompositorMutation& mutation = *entry.value;
+        Node* node = DOMNodeIds::nodeForId(elementId);
+        if (!node || !node->isElementNode())
+            continue;
+        toElement(node)->updateFromCompositorMutation(mutation);
+    }
+}
+
+} // namespace blink