Re-land: Update json_schema_compiler to handle the Automation extension API

chrome/test/data/extensions/api_test/automation/tests/tabs/image_data.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.
 
 var allTests = [
   function testGetImageData() {
-    var image = rootNode.find({ role: RoleType.image });
-    image.addEventListener(EventType.imageFrameUpdated, function() {
+    var image = rootNode.find({ role: RoleType.IMAGE });
+    image.addEventListener(EventType.IMAGE_FRAME_UPDATED, function() {
       assertEq(image.imageDataUrl.substr(0, 22), 'data:image/png;base64,');
       var imgElement = document.createElement('img');
       imgElement.src = image.imageDataUrl;
       var canvas = document.createElement('canvas');
       canvas.setAttribute('width', 2);
       canvas.setAttribute('height', 3);
       var context = canvas.getContext('2d');
       imgElement.onload = function() {
         context.drawImage(imgElement, 0, 0);
         var imageData = context.getImageData(0, 0, 2, 3);
@@ skipping 26 matching lines @@
         assertEq(imageData.data[22], 0xFF);
         assertEq(imageData.data[23], 0xFF);
         chrome.test.succeed();
       };
     }, true);
     image.getImageData(0, 0);
   }
 ];
 
 setUpAndRunTests(allTests, 'image_data.html');