Use unique IDs for accessibility nodes on Android

content/browser/accessibility/browser_accessibility_mac.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_MAC_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MAC_H_
 
 #include <map>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
 #include "content/browser/accessibility/browser_accessibility.h"
+#include "content/common/content_export.h"
 
 @class BrowserAccessibilityCocoa;
 
 namespace content {
 
+#if __OBJC__
+CONTENT_EXPORT const BrowserAccessibilityCocoa* ToBrowserAccessibilityCocoa(
+    const BrowserAccessibility* obj);
+CONTENT_EXPORT BrowserAccessibilityCocoa* ToBrowserAccessibilityCocoa(
+    BrowserAccessibility* obj);
+#endif
+
 class BrowserAccessibilityMac : public BrowserAccessibility {
  public:
   // BrowserAccessibility overrides.
   void NativeReleaseReference() override;
   bool IsNative() const override;
   void OnDataChanged() override;
 
   // The BrowserAccessibilityCocoa associated with us.
   BrowserAccessibilityCocoa* native_view() const {
     return browser_accessibility_cocoa_;
@@ skipping 14 matching lines @@
   // BrowserAccessibility.
   // We own this object until our manager calls ReleaseReference;
   // thereafter, the cocoa object owns us.
   BrowserAccessibilityCocoa* browser_accessibility_cocoa_;
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MAC_H_