Add test data for spaceport benchmark.

chrome/test/data/third_party/spaceport/js/tests/text.js

+define([ 'util/ensureCallback', 'util/bench' ], function (ensureCallback, bench) {
+    var texts = [ 'hello world', 'other text' ];
+    var CANVAS_WIDTH = 640;
+    var CANVAS_HEIGHT = 640;
+
+    var fontFamilies = {
+        sans: 'sans-serif',
+        serif: 'serif',
+        monospace: 'monospace'
+    };
+
+    var fontSizes = [ 8, 10, 12, 14, 16, 24 ];
+
+    var stylePreparers = {
+        outline: function (context) {
+            context.strokeStyle = 'red';
+        },
+
+        fill: function (context) {
+            context.fillStyle = 'green';
+        },
+
+        fillOutline: function (context) {
+            context.strokeStyle = 'red';
+            context.fillStyle = 'green';
+        }
+    };
+
+    var styleExecutors = {
+        outline: function (context, text) {
+            context.strokeText(text, 0, 0);
+        },
+
+        fill: function (context, text) {
+            context.fillText(text, 0, 0);
+        },
+
+        fillOutline: function (context, text) {
+            context.fillText(text, 0, 0);
+            context.strokeText(text, 0, 0);
+        }
+    };
+
+    var styles = Object.keys(styleExecutors);
+
+    function runTest(fontFamily, fontSize, style, callback) {
+        callback = ensureCallback(callback);
+
+        var canvas = document.createElement('canvas');
+        canvas.width = CANVAS_WIDTH;
+        canvas.height = CANVAS_HEIGHT;
+
+        var context = canvas.getContext('2d');
+        context.font = fontSize + 'pt ' + fontFamily;
+        context.textBaseline = 'top';
+        context.textAlign = 'left';
+        stylePreparers[style](context);
+
+        var execute = styleExecutors[style];
+        var score = bench(100, function (i) {
+            execute(context, texts[i % texts.length]);
+
+            // FIXME I'd like to be able to verify that the drawing operation
+            // actually executed (and didn't defer), but getImageData (below)
+            // is too slow to run in a loop like this.
+            //context.getImageData(0, 0, CANVAS_WIDTH, CANVAS_HEIGHT)[0];
+        });
+
+        callback(null, {
+            score: score.toFixed(2)
+        });
+    }
+
+    // family => size => style => test
+    var tests = { };
+    Object.keys(fontFamilies).forEach(function (fontFamilyKey) {
+        var fontFamily = fontFamilies[fontFamilyKey];
+
+        var subTests = { };
+        tests[fontFamilyKey] = subTests;
+        fontSizes.forEach(function (fontSize) {
+            var subSubTests = { };
+            subTests[fontSize] = subSubTests;
+            styles.forEach(function (style) {
+                subSubTests[style] = function (callback) {
+                    runTest(fontFamily, fontSize, style, callback);
+                };
+            });
+        });
+    });
+
+    return tests;
+});