Send AX event on nearest unignored ancestor of target.

content/renderer/accessibility/renderer_accessibility_complete.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/accessibility/renderer_accessibility_complete.h"
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 191 matching lines @@
     AccessibilityHostMsg_EventParams& event = src_events[i];
     if (event.event_type == ui::AX_EVENT_LAYOUT_COMPLETE)
       had_layout_complete_messages = true;
 
     WebAXObject obj = document.accessibilityObjectFromID(event.id);
 
     // Make sure the object still exists.
     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.
     if (!tree_source_.IsInTree(obj))
       continue;
 
     // When we get a "selected children changed" event, Blink
     // doesn't also send us events for each child that changed
     // selection state, so make sure we re-send that whole subtree.
     if (event.event_type ==
@@ skipping 207 matching lines @@
     render_frame_->GetRenderView()->GetWebView()->clearFocusedElement();
   else
     obj.setFocused(true);
 }
 
 void RendererAccessibilityComplete::OnFatalError() {
   CHECK(false) << "Invalid accessibility tree.";
 }
 
 }  // namespace content