Use unique IDs for accessibility nodes on Android

content/browser/accessibility/browser_accessibility_win.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_WIN_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <oleacc.h>
@@ skipping 79 matching lines @@
 
   // Mappings from roles and states to human readable strings. Initialize
   // with |InitializeStringMaps|.
   static std::map<int32_t, base::string16> role_string_map;
   static std::map<int32_t, base::string16> state_string_map;
 
   CONTENT_EXPORT BrowserAccessibilityWin();
 
   CONTENT_EXPORT ~BrowserAccessibilityWin() override;
 
-  // The Windows-specific unique ID, used as the child ID for MSAA methods
-  // like NotifyWinEvent, and as the unique ID for IAccessible2 and ISimpleDOM.
-  LONG unique_id_win() const { return unique_id_win_; }
-
   // Called after an atomic tree update completes. See
   // BrowserAccessibilityManagerWin::OnAtomicUpdateFinished for more
   // details on what these do.
   CONTENT_EXPORT void UpdateStep1ComputeWinAttributes();
   CONTENT_EXPORT void UpdateStep2ComputeHypertext();
   CONTENT_EXPORT void UpdateStep3FireEvents(bool is_subtree_creation);
   CONTENT_EXPORT void UpdateStep4DeleteOldWinAttributes();
 
   //
   // BrowserAccessibility methods.
@@ skipping 746 matching lines @@
   bool IsListBoxOptionOrMenuListOption();
 
   // Updates object attributes of IA2 with html attributes.
   void UpdateRequiredAttributes();
 
   // Given an int list attribute containing the ids of related elements,
   // add a new IAccessibleRelation for this object with the given type name.
   void AddRelations(ui::AXIntListAttribute src_attr,
                     const base::string16& iaccessiblerelation_type);
 
-  // Windows-specific unique ID (unique within the browser process),
-  // used for get_accChild, NotifyWinEvent, and as the unique ID for
-  // IAccessible2 and ISimpleDOM.
-  LONG unique_id_win_;
-
   struct WinAttributes {
     WinAttributes();
     ~WinAttributes();
 
     // IAccessible role and state.
     int32_t ia_role;
     int32_t ia_state;
     base::string16 role_name;
 
     // IAccessible name, description, help, value.
@@ skipping 26 matching lines @@
   // IA2_EVENT_TEXT_INSERTED event.
   scoped_ptr<WinAttributes> old_win_attributes_;
 
   // Relationships between this node and other nodes.
   std::vector<BrowserAccessibilityRelation*> relations_;
 
   // The previous scroll position, so we can tell if this object scrolled.
   int previous_scroll_x_;
   int previous_scroll_y_;
 
-  // The next unique id to use.
-  static LONG next_unique_id_win_;
-
   // Give BrowserAccessibility::Create access to our constructor.
   friend class BrowserAccessibility;
   friend class BrowserAccessibilityRelation;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityWin);
 };
 
+CONTENT_EXPORT BrowserAccessibilityWin*
+ToBrowserAccessibilityWin(BrowserAccessibility* obj);
+
+CONTENT_EXPORT const BrowserAccessibilityWin*
+ToBrowserAccessibilityWin(const BrowserAccessibility* obj);
+
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_WIN_H_