Add SetImageData api to chrome.clipboard.

chrome/test/data/extensions/api_test/clipboard/set_image_data/test.js

+// 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.
+
+// Test clipboard extension api chrome.clipboard.onClipboardDataChanged event.
+
+var testSuccessCount = 0;
+
+function testSetImageDataClipboard(imageUrl, imageType, expectSucceed) {
+  var oReq = new XMLHttpRequest();
+  oReq.open("GET", imageUrl, true);

[Devlin, 2016/12/16 02:26:16]

single quotes in js.

[jennyz, 2016/12/19 07:01:36]

Done.

+  oReq.responseType = "arraybuffer";
+
+  oReq.onload = function (oEvent) {
+    var arrayBuffer = oReq.response;
+    var binaryString = '';
+
+    if (arrayBuffer) {
+      chrome.clipboard.setImageData(arrayBuffer, imageType, function() {
+        chrome.test.assertEq(expectSucceed, !chrome.runtime.lastError);
+        chrome.test.succeed();
+      });
+    } else {
+      chrome.test.fail('Failed to load the png image file');
+    }
+  };
+
+  oReq.send(null);
+}
+
+function testSavePngImageToClipboard(baseUrl) {
+  testSetImageDataClipboard(baseUrl + '/icon1.png', 'png', true);
+}
+
+function testSaveJpegImageToClipboard(baseUrl) {
+  testSetImageDataClipboard(baseUrl + '/test.jpg', 'jpeg', true);
+}
+
+function testSaveBadImageData(baseUrl) {
+  testSetImageDataClipboard(baseUrl + '/redirect_target.gif', 'jpeg', false);
+}
+
+function bindTest(test, param) {
+  var result = test.bind(null, param);
+  result.generatedName = test.name;
+  return result;
+}
+
+chrome.test.getConfig(function(config) {
+  var baseUrl = 'http://localhost:' + config.testServer.port + '/extensions';
+  chrome.test.runTests([
+    bindTest(testSavePngImageToClipboard, baseUrl),
+    bindTest(testSaveJpegImageToClipboard, baseUrl),
+    bindTest(testSaveBadImageData, baseUrl)
+  ]);
+})