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

chrome/browser/resources/chromeos/chromevox/cvox2/background/output.js

Index: chrome/browser/resources/chromeos/chromevox/cvox2/background/output.js
diff --git a/chrome/browser/resources/chromeos/chromevox/cvox2/background/output.js b/chrome/browser/resources/chromeos/chromevox/cvox2/background/output.js
index 63f4ae557c62bed6977be5276fbc2c49921dfccb..45720681c6992464733303b54d62854abd3e0f93 100644
--- a/chrome/browser/resources/chromeos/chromevox/cvox2/background/output.js
+++ b/chrome/browser/resources/chromeos/chromevox/cvox2/background/output.js
@@ -30,6 +30,7 @@ var AutomationNode = chrome.automation.AutomationNode;
 var Dir = constants.Dir;
 var EventType = chrome.automation.EventType;
 var RoleType = chrome.automation.RoleType;
+var StateType = chrome.automation.StateType;
 
 /**
  * An Output object formats a cursors.Range into speech, braille, or both
@@ -1003,7 +1004,7 @@ Output.prototype = {
       return;
     var uniqueAncestors = AutomationUtil.getUniqueAncestors(prevParent, parent);
     for (var i = 0; parent = uniqueAncestors[i]; i++) {
-      if (parent.role == RoleType.window)
+      if (parent.role == RoleType.WINDOW)
         break;
       if (Output.ROLE_INFO_[parent.role] &&
           Output.ROLE_INFO_[parent.role].outputContextFirst) {
@@ -1069,20 +1070,19 @@ Output.prototype = {
       // All possible tokens based on prefix.
       if (prefix == '$') {
         if (token == 'value') {
-          var text = node.value;
-          if (!node.state.editable && node.name == text)
+          var text = node.value || '';
+          if (!node.state[StateType.EDITABLE] && node.name == text)
             return;
 
           var selectedText = '';
-          if (text !== undefined) {
-            if (node.textSelStart !== undefined) {
-              options.annotation.push(new Output.SelectionSpan(
-                  node.textSelStart,
-                  node.textSelEnd));
-
-              selectedText =
-                  node.value.substring(node.textSelStart, node.textSelEnd);
-            }
+          if (node.textSelStart !== undefined) {
+            options.annotation.push(new Output.SelectionSpan(
+                node.textSelStart || 0,
+                node.textSelEnd || 0));
+
+            selectedText =
+                node.value.substring(node.textSelStart || 0,
+                                     node.textSelEnd || 0);
           }
           options.annotation.push(token);
           if (selectedText && !this.formatOptions_.braille) {
@@ -1105,7 +1105,7 @@ Output.prototype = {
           this.append_(buff, node.description || '', options);
         } else if (token == 'urlFilename') {
           options.annotation.push('name');
-          var url = node.url;
+          var url = node.url || '';
           var filename = '';
           if (url.substring(0, 4) != 'data') {
             filename =
@@ -1117,23 +1117,22 @@ Output.prototype = {
           }
           this.append_(buff, filename, options);
         } else if (token == 'nameFromNode') {
-          if (chrome.automation.NameFromType[node.nameFrom] ==
-              'contents')
+          if (node.nameFrom == chrome.automation.NameFromType.CONTENTS)
             return;
 
           options.annotation.push('name');
-          this.append_(buff, node.name, options);
+          this.append_(buff, node.name || '', options);
         } else if (token == 'nameOrDescendants') {
           options.annotation.push(token);
           if (node.name)
-            this.append_(buff, node.name, options);
+            this.append_(buff, node.name || '', options);
           else
             this.format_(node, '$descendants', buff);
         } else if (token == 'description') {
           if (node.name == node.description || node.value == node.description)
             return;
           options.annotation.push(token);
-          this.append_(buff, node.description, options);
+          this.append_(buff, node.description || '', options);
         } else if (token == 'indexInParent') {
           if (node.parent) {
             options.annotation.push(token);
@@ -1168,22 +1167,25 @@ Output.prototype = {
               msg = 'aria_checked_false';
               break;
             default:
-            msg =
-                node.state.checked ? 'aria_checked_true' : 'aria_checked_false';
+              msg = node.state[StateType.CHECKED] ?
+                  'aria_checked_true' : 'aria_checked_false';
           }
           this.format_(node, '@' + msg, buff);
         } else if (token == 'state') {
-          Object.getOwnPropertyNames(node.state).forEach(function(s) {
-            var stateInfo = Output.STATE_INFO_[s];
-            if (stateInfo && !stateInfo.isRoleSpecific && stateInfo.on)
+          if (node.state) {
+            Object.getOwnPropertyNames(node.state).forEach(function(s) {
+              var stateInfo = Output.STATE_INFO_[s];
+              if (stateInfo && !stateInfo.isRoleSpecific && stateInfo.on)
               this.format_(node, '@' + stateInfo.on.msgId, buff);
-          }.bind(this));
+            }.bind(this));
+          }
         } else if (token == 'find') {
           // Find takes two arguments: JSON query string and format string.
           if (tree.firstChild) {
             var jsonQuery = tree.firstChild.value;
             node = node.find(
-                /** @type {Object}*/(JSON.parse(jsonQuery)));
+                /** @type {chrome.automation.FindParams}*/(
+                    JSON.parse(jsonQuery)));
             var formatString = tree.firstChild.nextSibling;
             if (node)
               this.format_(node, formatString, buff);
@@ -1230,7 +1232,7 @@ Output.prototype = {
           } else {
             console.error('Missing role info for ' + node.role);
           }
-          this.append_(buff, msg, options);
+          this.append_(buff, msg || '', options);
         } else if (token == 'inputType') {
           if (!node.inputType)
             return;
@@ -1285,7 +1287,8 @@ Output.prototype = {
             return;
           if (this.formatOptions_.speech && resolvedInfo.earconId) {
             options.annotation.push(
-                new Output.EarconAction(resolvedInfo.earconId), node.location);
+                new Output.EarconAction(resolvedInfo.earconId),
+                                        node.location || undefined);
           }
           var msgId =
               this.formatOptions_.braille ? resolvedInfo.msgId + '_brl' :
@@ -1307,7 +1310,8 @@ Output.prototype = {
               return;
 
             options.annotation.push(
-                new Output.EarconAction(tree.firstChild.value, node.location));
+                new Output.EarconAction(tree.firstChild.value,
+                                        node.location || undefined));
             this.append_(buff, '', options);
           } else if (token == 'countChildren') {
             var role = tree.firstChild.value;
@@ -1474,7 +1478,7 @@ Output.prototype = {
       for (i = 0; i < ancestors.length - 1; i++) {
         var node = ancestors[i];
         // Discard ancestors of deepest window.
-        if (node.role == RoleType.window) {
+        if (node.role == RoleType.WINDOW) {
           contextFirst = [];
           rest = [];
         }
@@ -1638,7 +1642,7 @@ Output.prototype = {
       options.annotation.push(earcon);
     var text = '';
 
-    if (this.formatOptions_.braille && !node.state.editable) {
+    if (this.formatOptions_.braille && !node.state[StateType.EDITABLE]) {
       // In braille, we almost always want to show the entire contents and
       // simply place the cursor under the SelectionSpan we set above.
       text = range.start.getText();
@@ -1781,7 +1785,7 @@ Output.prototype = {
             if (!s.node)
               return false;
             return s.node.display == 'inline' ||
-                s.node.role == RoleType.inlineTextBox;
+                s.node.role == RoleType.INLINE_TEXT_BOX;
           });
 
       var isName = cur.hasSpan('name');
@@ -1832,7 +1836,8 @@ Output.prototype = {
       while (earconFinder = ancestors.pop()) {
         var info = Output.ROLE_INFO_[earconFinder.role];
         if (info && info.earconId) {
-          return new Output.EarconAction(info.earconId, node.location);
+          return new Output.EarconAction(info.earconId,
+                                         node.location || undefined);
           break;
         }
         earconFinder = earconFinder.parent;