Disable accessibility when VoiceOver is turned off.

content/renderer/accessibility/renderer_accessibility_complete.h

 // 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.
 
 #ifndef CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_COMPLETE_H_
 #define CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_COMPLETE_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 29 matching lines @@
   ~RendererAccessibilityComplete() override;
 
   // RenderFrameObserver implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // RendererAccessibility.
   void HandleWebAccessibilityEvent(const blink::WebAXObject& obj,
                                    blink::WebAXEvent event) override;
   RendererAccessibilityType GetType() override;
   void FocusedNodeChanged(const blink::WebNode& node) override;
+  virtual void DisableAccessibility() override;
 
   void HandleAXEvent(const blink::WebAXObject& obj, ui::AXEvent event);
 
  protected:
   // Send queued events from the renderer to the browser.
   void SendPendingAccessibilityEvents();
 
   // Check the entire accessibility tree to see if any nodes have
   // changed location, by comparing their locations to the cached
   // versions. If any have moved, send an IPC with the new locations.
@@ skipping 34 matching lines @@
 
   // So we can queue up tasks to be executed later.
   base::WeakPtrFactory<RendererAccessibilityComplete> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererAccessibilityComplete);
 };
 
 #endif  // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_COMPLETE_H_
 
 }  // namespace content