Add test data for spaceport benchmark.

chrome/test/data/third_party/spaceport/js/sprites/renderers/css3dImg.js

+define([ 'util/ensureCallback', 'features', 'Modernizr', 'sprites/renderers/DomContext', 'util/create', 'sprites/container', 'util/quickPromise' ], function (ensureCallback, features, Modernizr, DomContext, create, container, quickPromise) {
+    function RenderContext(sourceData, frameData) {
+        if (!Modernizr.csstransforms3d) {
+            return;
+        }
+
+        this.loadPromise = quickPromise();
+        DomContext.call(this, sourceData, frameData, this.loadPromise.resolve);
+
+        this.elements.forEach(function (frameElements) {
+            frameElements.forEach(function (element) {
+                element.style[features.transformOriginStyleProperty] = '0 0';
+            });
+        });
+
+        this.transformData = frameData.map(function (objectTransforms) {
+            return objectTransforms.map(function (t) {
+                return t.cssTransform3d;
+            });
+        });
+
+        this.containerElement = container();
+    }
+
+    RenderContext.prototype = create(DomContext.prototype);
+
+    RenderContext.prototype.load = function load(callback) {
+        callback = ensureCallback(callback);
+
+        if (!Modernizr.csstransforms3d) {
+            callback(new Error('Not supported'));
+            return;
+        }
+
+        document.body.appendChild(this.containerElement);
+
+        this.loadPromise.then(function () {
+            callback(null);
+        });
+    };
+
+    RenderContext.prototype.unload = function unload() {
+        this.containerElement.parentNode.removeChild(this.containerElement);
+        DomContext.prototype.unload.call(this);
+    };
+
+    var transformStyleProperty = features.transformStyleProperty;
+
+    RenderContext.prototype.processElements = function processElements(elements, transforms) {
+        var count = transforms.length;
+        var i;
+        for (i = 0; i < count; ++i) {
+            var element = elements[i];
+            element.style[transformStyleProperty] = transforms[i];
+            element.zIndex = i;
+
+            // Elements not in the DOM need to be added
+            if (!element.parentNode) {
+                this.containerElement.appendChild(element);
+            }
+        }
+    };
+
+    return function (element, frameData) {
+        return new RenderContext(element, frameData);
+    };
+});