Give TextEditorActionHandler an explicit parent and unify usage.

The action handler implicitly passed ownership to ICore, which is non-
to the action handler. We now consistently create the action handler in
the editor factory, give ownership to the editor factory, and don't hold
a reference to it.

Change-Id: I4372f8de966e3ceff87c06c5528c6b54522c1d57
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/texteditor/plaintexteditorfactory.cpp

@@ -51,18 +51,13 @@ PlainTextEditorFactory::PlainTextEditorFactory(QObject *parent)
     setDisplayName(qApp->translate("OpenWith::Editors", Core::Constants::K_DEFAULT_TEXT_EDITOR_DISPLAY_NAME));
     addMimeType(QLatin1String(TextEditor::Constants::C_TEXTEDITOR_MIMETYPE_TEXT));
 
-    m_actionHandler = new TextEditorActionHandler(
+    new TextEditorActionHandler(this,
         TextEditor::Constants::C_TEXTEDITOR,
         TextEditorActionHandler::Format |
         TextEditorActionHandler::UnCommentSelection |
         TextEditorActionHandler::UnCollapseAll);
 }
 
-PlainTextEditorFactory::~PlainTextEditorFactory()
-{
-    delete m_actionHandler;
-}
-
 Core::IEditor *PlainTextEditorFactory::createEditor(QWidget *parent)
 {
     PlainTextEditorWidget *rc = new PlainTextEditorWidget(parent);