Use unique IDs for accessibility nodes on Android

content/browser/accessibility/browser_accessibility_manager_mac.mm

 // 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.
 
 #include "content/browser/accessibility/browser_accessibility_manager_mac.h"
 
 #include <stddef.h>
 
 #import "base/mac/mac_util.h"
 #import "base/mac/sdk_forward_declarations.h"
@@ skipping 122 matching lines @@
 
     if (node->GetRole() == ui::AX_ROLE_LIST_BOX_OPTION &&
         node->HasState(ui::AX_STATE_SELECTED) &&
         node->GetParent() &&
         node->GetParent()->GetRole() == ui::AX_ROLE_LIST_BOX) {
       node = node->GetParent();
       SetFocus(*node);
     }
   }
 
-  auto native_node = node->ToBrowserAccessibilityCocoa();
+  auto native_node = ToBrowserAccessibilityCocoa(node);
   DCHECK(native_node);
 
   // Refer to |AXObjectCache::postPlatformNotification| in WebKit source code.
   NSString* mac_notification;
   switch (event_type) {
     case ui::AX_EVENT_ACTIVEDESCENDANTCHANGED:
       if (node->GetRole() == ui::AX_ROLE_TREE) {
         mac_notification = NSAccessibilitySelectedRowsChangedNotification;
       } else if (node->GetRole() == ui::AX_ROLE_COMBO_BOX) {
         // Even though the selected item in the combo box has changed, we don't
@@ skipping 26 matching lines @@
       } else {
         mac_notification = NSAccessibilitySelectedChildrenChangedNotification;
       }
       break;
     case ui::AX_EVENT_DOCUMENT_SELECTION_CHANGED: {
       mac_notification = NSAccessibilitySelectedTextChangedNotification;
       // WebKit fires a notification both on the focused object and the root.
       BrowserAccessibility* focus = GetFocus();
       if (!focus)
         break;
-      NSAccessibilityPostNotification(focus->ToBrowserAccessibilityCocoa(),
+      NSAccessibilityPostNotification(ToBrowserAccessibilityCocoa(focus),
                                       mac_notification);
 
       if (base::mac::IsOSElCapitanOrLater()) {
         // |NSAccessibilityPostNotificationWithUserInfo| should be used on OS X
         // 10.11 or later to notify Voiceover about text selection changes. This
         // API has been present on versions of OS X since 10.7 but doesn't
         // appear to be needed by Voiceover before version 10.11.
         NSDictionary* user_info =
             GetUserInfoForSelectedTextChangedNotification();
 
         BrowserAccessibility* root = GetRoot();
         if (!root)
           return;
 
         NSAccessibilityPostNotificationWithUserInfo(
-            focus->ToBrowserAccessibilityCocoa(), mac_notification, user_info);
+            ToBrowserAccessibilityCocoa(focus), mac_notification, user_info);
         NSAccessibilityPostNotificationWithUserInfo(
-            root->ToBrowserAccessibilityCocoa(), mac_notification, user_info);
+            ToBrowserAccessibilityCocoa(root), mac_notification, user_info);
         return;
       }
       break;
     }
     case ui::AX_EVENT_CHECKED_STATE_CHANGED:
     case ui::AX_EVENT_VALUE_CHANGED:
       mac_notification = NSAccessibilityValueChangedNotification;
       break;
     // TODO(nektar): Need to add an event for live region created.
     case ui::AX_EVENT_LIVE_REGION_CHANGED:
@@ skipping 92 matching lines @@
   [user_info
       setObject:[NSNumber numberWithInt:AXTextSelectionGranularityUnknown]
          forKey:NSAccessibilityTextSelectionGranularity];
   [user_info setObject:[NSNumber numberWithBool:YES]
                 forKey:NSAccessibilityTextSelectionChangedFocus];
 
   int32_t focus_id = GetTreeData().sel_focus_object_id;
   BrowserAccessibility* focus_object = GetFromID(focus_id);
   if (focus_object) {
     focus_object = focus_object->GetClosestPlatformObject();
-    auto native_focus_object = focus_object->ToBrowserAccessibilityCocoa();
+    auto native_focus_object = ToBrowserAccessibilityCocoa(focus_object);
     if (native_focus_object) {
       [user_info setObject:[native_focus_object selectedTextMarkerRange]
                     forKey:NSAccessibilitySelectedTextMarkerRangeAttribute];
       [user_info setObject:native_focus_object
                     forKey:NSAccessibilityTextChangeElement];
     }
   }
 
   return user_info;
 }
 
 }  // namespace content