Initial skeleton for System Indicator API

chrome/test/data/extensions/api_test/system_indicator/basics/test.js

+// Copyright (c) 2010 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.
+
+chrome.test.runTests([
+  function setIconAndShow() {
+    var canvas = document.createElement('canvas');
+    canvas.width = 20;
+    canvas.height = 20;
+
+    var canvas_context = canvas.getContext('2d');
+    canvas_context.clearRect(0, 0, 20, 20);
+    canvas_context.fillStyle = '#00FF00';
+    canvas_context.fillRect(5, 5, 15, 15);
+    var data = canvas_context.getImageData(0, 0, 19, 19);
+    chrome.systemIndicator.setIcon(
+        { imageData: data },
+        chrome.test.callbackPass(function() {
+          chrome.systemIndicator.enable();
+          chrome.systemIndicator.disable();
+        }));
+  }
+]);