Only read out selected node in processing menuListItemSelected event.

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

Index: chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js
diff --git a/chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js b/chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js
index f7c5a73a3482f922976e638fdc1cdbcf028c4bae..833ee6411e05d8053af22197b1ad9863583b8cd0 100644
--- a/chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js
+++ b/chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js
@@ -50,7 +50,7 @@ DesktopAutomationHandler = function(node) {
   this.addListener_(e.hover, this.onEventWithFlushedOutput);
   this.addListener_(e.loadComplete, this.onLoadComplete);
   this.addListener_(e.menuEnd, this.onMenuEnd);
-  this.addListener_(e.menuListItemSelected, this.onEventDefault);
+  this.addListener_(e.menuListItemSelected, this.onEventIfSelected);
   this.addListener_(e.menuStart, this.onMenuStart);
   this.addListener_(e.scrollPositionChanged, this.onScrollPositionChanged);
   this.addListener_(e.selection, this.onEventWithFlushedOutput);
@@ -146,6 +146,14 @@ DesktopAutomationHandler.prototype = {
   /**
    * @param {!AutomationEvent} evt
    */
+  onEventIfSelected: function(evt) {
+    if (evt.target.state.selected)
+      this.onEventDefault(evt);
+  },
+
+  /**
+   * @param {!AutomationEvent} evt
+   */
   onEventWithFlushedOutput: function(evt) {
     Output.flushNextSpeechUtterance();
     this.onEventDefault(evt);