Project: Inline RunConfiguration::wrapWidget helper again

There are no external users left, so there's no need to expose
it in the header anymore. Also saves a cast.

Change-Id: I1ced368ebc9588cbc0058cc7d37f39ab80f9c595
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/projectexplorer/runconfiguration.cpp

@@ -224,6 +224,8 @@ QWidget *RunConfiguration::createConfigurationWidget()
 {
     auto widget = new QWidget;
     auto formLayout = new QFormLayout(widget);
+    formLayout->setMargin(0);
+    formLayout->setFieldGrowthPolicy(QFormLayout::ExpandingFieldsGrow);
 
     for (ProjectConfigurationAspect *aspect : m_aspects) {
         if (aspect->isVisible())
@@ -232,7 +234,10 @@ QWidget *RunConfiguration::createConfigurationWidget()
 
     Core::VariableChooser::addSupportForChildWidgets(widget, macroExpander());
 
-    return wrapWidget(widget);
+    auto detailsWidget = new Utils::DetailsWidget;
+    detailsWidget->setState(DetailsWidget::NoSummary);
+    detailsWidget->setWidget(widget);
+    return detailsWidget;
 }
 
 void RunConfiguration::updateEnabledState()
@@ -282,18 +287,6 @@ BuildConfiguration *RunConfiguration::activeBuildConfiguration() const
     return target()->activeBuildConfiguration();
 }
 
-QWidget *RunConfiguration::wrapWidget(QWidget *inner) const
-{
-    auto detailsWidget = new Utils::DetailsWidget;
-    detailsWidget->setState(DetailsWidget::NoSummary);
-    detailsWidget->setWidget(inner);
-    if (auto fl = qobject_cast<QFormLayout *>(inner->layout())){
-        fl->setMargin(0);
-        fl->setFieldGrowthPolicy(QFormLayout::ExpandingFieldsGrow);
-    }
-    return detailsWidget;
-}
-
 Target *RunConfiguration::target() const
 {
     return static_cast<Target *>(parent());

src/plugins/projectexplorer/runconfiguration.h

@@ -205,7 +205,6 @@ protected:
 
     /// convenience function to get current build configuration.
     BuildConfiguration *activeBuildConfiguration() const;
-    QWidget *wrapWidget(QWidget *inner) const;
 
     template<class T> void setOutputFormatter()
     {