Anti-shelf-overlapping fixes for several menus.

chrome/browser/resources/chromeos/login/oobe.js

Index: chrome/browser/resources/chromeos/login/oobe.js
diff --git a/chrome/browser/resources/chromeos/login/oobe.js b/chrome/browser/resources/chromeos/login/oobe.js
index d5259d6defa0a1a3fb14f00d7bbef75413e9adf5..372141a74f23b937493c5e8efc797d4b1c23bdf3 100644
--- a/chrome/browser/resources/chromeos/login/oobe.js
+++ b/chrome/browser/resources/chromeos/login/oobe.js
@@ -146,6 +146,16 @@ cr.define('cr.ui.Oobe', function() {
       $('accessibility-menu').showForElement(e.target,
                                              cr.ui.Bubble.Attachment.BOTTOM,
                                              BUBBLE_OFFSET, BUBBLE_PADDING);
+
+      var maxHeight = Oobe.getMaxHeightBeforeShelfOverlapping(
+          $('accessibility-menu'));
+      if (maxHeight <
+          parseInt(window.getComputedStyle($('accessibility-menu')).height)) {
+        $('accessibility-menu').showForElement(e.target,
+                                               cr.ui.Bubble.Attachment.TOP,
+                                               BUBBLE_OFFSET, BUBBLE_PADDING);
+      }
+
       $('accessibility-menu').firstBubbleElement = $('spoken-feedback');
       $('accessibility-menu').lastBubbleElement = $('close-accessibility-menu');
       if (Oobe.getInstance().currentScreen &&