Implement AXPlatformNodeWin::get_indexInParent

ui/accessibility/platform/ax_platform_node_win.h

 // Copyright 2015 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 UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_WIN_H_
 #define UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_WIN_H_
 
 #include <atlbase.h>
 #include <atlcom.h>
 #include <oleacc.h>
@@ skipping 111 matching lines @@
 
   STDMETHODIMP get_windowHandle(HWND* window_handle) override;
 
   STDMETHODIMP get_relationTargetsOfType(BSTR type,
                                          long max_targets,
                                          IUnknown*** targets,
                                          long* n_targets) override;
 
   STDMETHODIMP get_attributes(BSTR* attributes) override;
 
+  STDMETHODIMP get_indexInParent(LONG* index_in_parent) override;
+
   //
   // IAccessible2 methods not implemented.
   //
 
   STDMETHODIMP get_attribute(BSTR name, VARIANT* attribute) override {
     return E_NOTIMPL;
   }
-  STDMETHODIMP get_indexInParent(LONG* index_in_parent) override {
-    return E_NOTIMPL;
-  }
   STDMETHODIMP get_extendedRole(BSTR* extended_role) override {
     return E_NOTIMPL;
   }
   STDMETHODIMP get_nRelations(LONG* n_relations) override { return E_NOTIMPL; }
   STDMETHODIMP get_relation(LONG relation_index,
                             IAccessibleRelation** relation) override {
     return E_NOTIMPL;
   }
   STDMETHODIMP get_relations(LONG max_relations,
                              IAccessibleRelation** relations,
@@ skipping 174 matching lines @@
   // wants to retrieve the object the event was fired on, it calls
   // get_accChild and passes the child ID. We use negative IDs for the unique
   // ID so we can distinguish a request for an arbitrary child from a request
   // for an immediate child of an object by its 0-based index.
   LONG unique_id_win_;
 };
 
 }  // namespace ui
 
 #endif  // UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_WIN_H_