Bug 1484115 - part 2: Get rid of nsITableEditor.getNextRow() r=m_kato

Nobody uses nsITableEditor.getNextRow().  Therefore, this patch removes this
XPCOM API.

Differential Revision: https://phabricator.services.mozilla.com/D3949

--HG--
extra : moz-landing-system : lando

editor/libeditor/HTMLTableEditor.cpp

@@ -277,23 +277,6 @@ HTMLEditor::GetFirstTableRowElement(Element& aTableOrElementInTable,
   return nullptr;
 }
 
-NS_IMETHODIMP
-HTMLEditor::GetNextRow(Element* aTableRowElement,
-                       Element** aNextTableRowElement)
-{
-  if (NS_WARN_IF(!aTableRowElement) || NS_WARN_IF(!aNextTableRowElement)) {
-    return NS_ERROR_INVALID_ARG;
-  }
-  ErrorResult error;
-  RefPtr<Element> nextRowElement =
-    GetNextTableRowElement(*aTableRowElement, error);
-  if (NS_WARN_IF(error.Failed())) {
-    return error.StealNSResult();
-  }
-  nextRowElement.forget(aNextTableRowElement);
-  return NS_OK;
-}
-
 Element*
 HTMLEditor::GetNextTableRowElement(Element& aTableRowElement,
                                    ErrorResult& aRv) const

editor/nsITableEditor.idl

@@ -223,17 +223,6 @@ interface nsITableEditor : nsISupports
    */
   Element getFirstRow(in Element aTableElement);
 
-  /**
-   * getNextRow() returns next <tr> element of given <tr> element.
-   *
-   * @param aTableRowElement     Must be a <tr> element.
-   * @return                     <tr> element next to aTableRowElement if there
-   *                             is.  Note that this may be in different
-   *                             table section element (e.g., <tbody>).
-   *                             However, never crosses <table> boundary.
-   */
-  Element getNextRow(in Element aTableElement);
-
   /** Preferred direction to search for neighboring cell
     * when trying to locate a cell to place caret in after
     * a table editing action.