Implement AXPlatformNodeWin::get_indexInParent

ui/accessibility/platform/ax_platform_node_win.h

Index: ui/accessibility/platform/ax_platform_node_win.h
diff --git a/ui/accessibility/platform/ax_platform_node_win.h b/ui/accessibility/platform/ax_platform_node_win.h
index 36217904b49a4a2ce169a865183699245cfbc94a..af45654d6dc313b02cc02b4224a866aa1986a13d 100644
--- a/ui/accessibility/platform/ax_platform_node_win.h
+++ b/ui/accessibility/platform/ax_platform_node_win.h
@@ -129,6 +129,8 @@ AXPlatformNodeWin
 
   STDMETHODIMP get_attributes(BSTR* attributes) override;
 
+  STDMETHODIMP get_indexInParent(LONG* index_in_parent) override;
+
   //
   // IAccessible2 methods not implemented.
   //
@@ -136,9 +138,6 @@ AXPlatformNodeWin
   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;
   }