Move some accessibility methods, enums and interfaces into the content/public API.

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 <vector>
 
 #include "base/hash_tables.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/accessibility_node_data.h"
+#include "content/public/common/accessibility_mode.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "content/renderer/accessibility/renderer_accessibility.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebAccessibilityNotification.h"
 
 namespace WebKit {
 class WebAccessibilityObject;
 class WebDocument;
 class WebNode;
 };
 
@@ skipping 108 matching lines @@
 
   // True if verbose logging of accessibility events is on.
   bool logging_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererAccessibilityComplete);
 };
 
 #endif  // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_COMPLETE_H_
 
 }  // namespace content