Rename repaint to paintInvalidation for remaining methods.

Source/core/rendering/RenderWidget.cpp

Index: Source/core/rendering/RenderWidget.cpp
diff --git a/Source/core/rendering/RenderWidget.cpp b/Source/core/rendering/RenderWidget.cpp
index ed3a53ac0af512af089a0414573a265b222c209a..20affad22f2f65509aa1ebd24ebd19d5e78a3c5f 100644
--- a/Source/core/rendering/RenderWidget.cpp
+++ b/Source/core/rendering/RenderWidget.cpp
@@ -269,7 +269,7 @@ void RenderWidget::updateOnWidgetChange()
         widget->hide();
     } else {
         widget->show();
-        // FIXME: Why do we repaint in this case, but not the other?
+        // FIXME: Why do we issue a full paint invalidation in this case, but not the other?
         paintInvalidationForWholeRenderer();
     }
 }