Send AX event on nearest unignored ancestor of target.

content/renderer/accessibility/renderer_accessibility_complete.cc

Index: content/renderer/accessibility/renderer_accessibility_complete.cc
diff --git a/content/renderer/accessibility/renderer_accessibility_complete.cc b/content/renderer/accessibility/renderer_accessibility_complete.cc
index f9807c053e886b9dec281f7621cdce681a33df3d..c637771db357669322958e154040736f6790e68b 100644
--- a/content/renderer/accessibility/renderer_accessibility_complete.cc
+++ b/content/renderer/accessibility/renderer_accessibility_complete.cc
@@ -209,6 +209,10 @@ void RendererAccessibilityComplete::SendPendingAccessibilityEvents() {
     if (!obj.updateBackingStoreAndCheckValidity())
       continue;
 
+    // If it's ignored, find the first ancestor that's not ignored.
+    while (!obj.isDetached() && obj.accessibilityIsIgnored())
+      obj = obj.parentObject();
+
     // Make sure it's a descendant of our root node - exceptions include the
     // scroll area that's the parent of the main document (we ignore it), and
     // possibly nodes attached to a different document.