Make it possible to focus on 0-size form controls and anchors.

Source/core/html/HTMLFormControlElement.cpp

Index: Source/core/html/HTMLFormControlElement.cpp
diff --git a/Source/core/html/HTMLFormControlElement.cpp b/Source/core/html/HTMLFormControlElement.cpp
index 7d0a9b937f29ab804e4f97d718fe96dbdecd557a..7f50078ca85d9b006a1a49370c69a53b480b4f1a 100644
--- a/Source/core/html/HTMLFormControlElement.cpp
+++ b/Source/core/html/HTMLFormControlElement.cpp
@@ -313,15 +313,6 @@ bool HTMLFormControlElement::supportsFocus() const
     return !isDisabledFormControl();
 }
 
-bool HTMLFormControlElement::rendererIsFocusable() const
-{
-    // If there's a renderer, make sure the size isn't empty, but if there's no renderer,
-    // it might still be focusable if it's in a canvas subtree (handled in Element::rendererIsFocusable).
-    if (renderer() && (!renderer()->isBox() || toRenderBox(renderer())->size().isEmpty()))
-        return false;
-    return HTMLElement::rendererIsFocusable();
-}
-
 bool HTMLFormControlElement::isKeyboardFocusable() const
 {
     // Skip tabIndex check in a parent class.