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diff --git a/Source/WebKit/chromium/tests/GraphicsLayerChromiumTest.cpp b/Source/WebKit/chromium/tests/GraphicsLayerChromiumTest.cpp
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+++ b/Source/WebKit/chromium/tests/GraphicsLayerChromiumTest.cpp
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+/*
+ * 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
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include "GraphicsLayerChromium.h"
+
+#include "CCAnimationTestCommon.h"
+#include "GraphicsLayer.h"
+#include <gtest/gtest.h>
+#include <wtf/PassOwnPtr.h>
+
+using namespace WebCore;
+using namespace WebKitTests;
+
+namespace {
+
+class MockGraphicsLayerClient : public GraphicsLayerClient {
+  public:
+    virtual void notifyAnimationStarted(const GraphicsLayer*, double time) { }
+    virtual void notifySyncRequired(const GraphicsLayer*) { }
+    virtual void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect& inClip) { }
+    virtual bool showDebugBorders(const GraphicsLayer*) const { return false; }
+    virtual bool showRepaintCounter(const GraphicsLayer*) const { return false; }
+};
+
+TEST(GraphicsLayerChromiumTest, updateLayerPreserves3DWithAnimations)
+{
+    MockGraphicsLayerClient client;
+    OwnPtr<GraphicsLayerChromium> graphicsLayer = static_pointer_cast<GraphicsLayerChromium>(GraphicsLayer::create(&client));
+    ASSERT_TRUE(graphicsLayer.get());
+
+    LayerChromium* platformLayer = static_cast<LayerChromium*>(graphicsLayer->platformLayer());
+    ASSERT_TRUE(platformLayer);
+
+    ASSERT_FALSE(platformLayer->hasActiveAnimation());
+
+    OwnPtr<CCActiveAnimation> floatAnimation(CCActiveAnimation::create(adoptPtr(new FakeFloatAnimationCurve), 0, 1, CCActiveAnimation::Opacity));
+    platformLayer->layerAnimationController()->add(floatAnimation.release());
+
+    ASSERT_TRUE(platformLayer->hasActiveAnimation());
+
+    graphicsLayer->setPreserves3D(true);
+
+    platformLayer = static_cast<LayerChromium*>(graphicsLayer->platformLayer());
+    ASSERT_TRUE(platformLayer);
+
+    ASSERT_TRUE(platformLayer->hasActiveAnimation());
+    platformLayer->removeAnimation(0);
+    ASSERT_FALSE(platformLayer->hasActiveAnimation());
+
+    graphicsLayer->setPreserves3D(false);
+
+    platformLayer = static_cast<LayerChromium*>(graphicsLayer->platformLayer());
+    ASSERT_TRUE(platformLayer);
+
+    ASSERT_FALSE(platformLayer->hasActiveAnimation());
+}
+
+} // namespace