Disable accessibility when VoiceOver is turned off.

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 80 matching lines @@
   if (document.isNull())
     return;
 
   if (node.isNull()) {
     // When focus is cleared, implicitly focus the document.
     // TODO(dmazzoni): Make Blink send this notification instead.
     HandleAXEvent(document.accessibilityObject(), ui::AX_EVENT_BLUR);
   }
 }
 
+void RendererAccessibilityComplete::DisableAccessibility() {
+  RenderView* render_view = render_frame_->GetRenderView();
+  if (!render_view)
+    return;
+
+  WebView* web_view = render_view->GetWebView();
+  if (!web_view)
+    return;
+
+  WebSettings* settings = web_view->settings();
+  if (!settings)
+    return;
+
+  settings->setAccessibilityEnabled(false);
+}
+
 void RendererAccessibilityComplete::HandleWebAccessibilityEvent(
     const blink::WebAXObject& obj, blink::WebAXEvent event) {
   HandleAXEvent(obj, AXEventFromBlink(event));
 }
 
 void RendererAccessibilityComplete::HandleAXEvent(
     const blink::WebAXObject& obj, ui::AXEvent event) {
   const WebDocument& document = GetMainDocument();
   if (document.isNull())
     return;
@@ skipping 305 matching lines @@
     render_frame_->GetRenderView()->GetWebView()->clearFocusedElement();
   else
     obj.setFocused(true);
 }
 
 void RendererAccessibilityComplete::OnFatalError() {
   CHECK(false) << "Invalid accessibility tree.";
 }
 
 }  // namespace content