Force AXPlatformNode to have the same unique id as the owning BA object.

content/browser/accessibility/browser_accessibility_com_win.cc

 // Copyright (c) 2017 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_com_win.h"
 
 #include <UIAutomationClient.h>
 #include <UIAutomationCoreApi.h>
 
 #include <algorithm>
@@ skipping 4087 matching lines @@
   // Detach BrowserAccessibilityWin from us.
   owner_ = nullptr;
   AXPlatformNodeWin::Destroy();
 }
 
 void BrowserAccessibilityComWin::Init(ui::AXPlatformNodeDelegate* delegate) {
   owner_ = static_cast<BrowserAccessibilityWin*>(delegate);
   AXPlatformNodeBase::Init(delegate);
 }
 
+ui::AXPlatformNode* BrowserAccessibilityComWin::GetFromUniqueId(
+    int32_t unique_id) {
+  return ToBrowserAccessibilityComWin(
+      BrowserAccessibility::GetFromUniqueID(unique_id));
+}
+
 std::vector<base::string16> BrowserAccessibilityComWin::ComputeTextAttributes()
     const {
   std::vector<base::string16> attributes;
 
   // We include list markers for now, but there might be other objects that are
   // auto generated.
   // TODO(nektar): Compute what objects are auto-generated in Blink.
   if (owner()->GetRole() == ui::AX_ROLE_LIST_MARKER)
     attributes.push_back(L"auto-generated:true");
   else
@@ skipping 1613 matching lines @@
 
 BrowserAccessibilityComWin* ToBrowserAccessibilityComWin(
     BrowserAccessibility* obj) {
   if (!obj || !obj->IsNative())
     return nullptr;
   auto* result = static_cast<BrowserAccessibilityWin*>(obj)->GetCOM();
   return result;
 }
 
 }  // namespace content