Added Home, end, PageUp, PageDown support in the ChromeVox menu

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

Index: chrome/browser/resources/chromeos/chromevox/cvox2/background/panel.js
diff --git a/chrome/browser/resources/chromeos/chromevox/cvox2/background/panel.js b/chrome/browser/resources/chromeos/chromevox/cvox2/background/panel.js
index a93365a55959d9d397e033bc80388b1dad1906a3..60133570e9f67c0957f4b0783c87f0aa401343a4 100644
--- a/chrome/browser/resources/chromeos/chromevox/cvox2/background/panel.js
+++ b/chrome/browser/resources/chromeos/chromevox/cvox2/background/panel.js
@@ -443,6 +443,20 @@ Panel.activateMenu = function(menu) {
 };
 
 /**
+ * Sets the index of the current active menu to be 0.
+ */
+Panel.scrollToTop = function() {
+  this.activeMenu_.scrollToTop();
+};
+
+/**
+ * Sets the index of the current active menu to be the last index.
+ */
+Panel.scrollToBottom = function() {
+  this.activeMenu_.scrollToBottom();
+};
+
+/**
  * Advance the index of the current active menu by |delta|.
  * @param {number} delta The number to add to the active menu index.
  */
@@ -530,6 +544,18 @@ Panel.onKeyDown = function(event) {
     case 'Escape':
       Panel.closeMenusAndRestoreFocus();
       break;
+    case 'PageUp':
+      Panel.advanceItemBy(10);
+      break;
+    case 'PageDown':
+      Panel.advanceItemBy(-10);
+      break;
+    case 'Home':
+      Panel.scrollToTop();
+      break;
+    case 'End':
+      Panel.scrollToBottom();
+      break;
     case 'Enter':
     case ' ':  // Space
       Panel.pendingCallback_ = Panel.getCallbackForCurrentItem();