Creates AXPosition to uniquely identify a position in the accessibility tree

content/browser/accessibility/browser_accessibility.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_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_split.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/web/WebAXEnums.h"
 #include "ui/accessibility/ax_node.h"
 #include "ui/accessibility/ax_node_data.h"
+#include "ui/accessibility/ax_position.h"
 #include "ui/accessibility/ax_text_utils.h"
 
 // Set PLATFORM_HAS_NATIVE_ACCESSIBILITY_IMPL if this platform has
 // a platform-specific subclass of BrowserAccessibility and
 // BrowserAccessibilityManager.
 #undef PLATFORM_HAS_NATIVE_ACCESSIBILITY_IMPL
 
 #if defined(OS_WIN)
 #define PLATFORM_HAS_NATIVE_ACCESSIBILITY_IMPL 1
 #endif
@@ skipping 30 matching lines @@
 // tree on the browser side. It exactly corresponds to one WebAXObject from
 // Blink. It's owned by a BrowserAccessibilityManager.
 //
 // There are subclasses of BrowserAccessibility for each platform where
 // we implement native accessibility APIs. This base class is used occasionally
 // for tests.
 //
 ////////////////////////////////////////////////////////////////////////////////
 class CONTENT_EXPORT BrowserAccessibility {
  public:
+  using AXPosition = ui::AXPosition<BrowserAccessibility>;
+
   // Creates a platform specific BrowserAccessibility. Ownership passes to the
   // caller.
   static BrowserAccessibility* Create();
 
   virtual ~BrowserAccessibility();
 
   static BrowserAccessibility* GetFromUniqueID(int32_t unique_id);
 
   // Called only once, immediately after construction. The constructor doesn't
   // take any arguments because in the Windows subclass we use a special
@@ skipping 292 matching lines @@
   // page coordinates (when |frameOnly| is false), or in frame coordinates
   // (when |frameOnly| is true).
   gfx::Rect RelativeToAbsoluteBounds(gfx::RectF bounds, bool frame_only) const;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_