Hide AXPlatformNode on ChromeOS.

ui/views/controls/webview/webview.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 UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
 #define UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "content/public/browser/render_process_host_observer.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
-#include "ui/views/accessibility/native_view_accessibility.h"
+#include "ui/gfx/native_widget_types.h"
 #include "ui/views/controls/webview/webview_export.h"
 #include "ui/views/view.h"
 
 namespace views {
 
 class NativeViewHost;
 
 // Provides a view of a WebContents instance.  WebView can be used standalone,
 // creating and displaying an internally-owned WebContents; or within a full
 // browser where the browser swaps its own WebContents instances in/out (e.g.,
@@ skipping 148 matching lines @@
   content::BrowserContext* browser_context_;
   bool allow_accelerators_;
   gfx::Size preferred_size_;
 
   DISALLOW_COPY_AND_ASSIGN(WebView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_WEBVIEW_WEBVIEW_H_