Fix regression caused by r178354 where options in optgroup not indented

Source/core/html/HTMLOptionElement.cpp

Index: Source/core/html/HTMLOptionElement.cpp
diff --git a/Source/core/html/HTMLOptionElement.cpp b/Source/core/html/HTMLOptionElement.cpp
index 90a3895b670fb248d30a38285853dbce40a046f8..018bc3d5924b2d1931c0efc0b6731c3e7db51236 100644
--- a/Source/core/html/HTMLOptionElement.cpp
+++ b/Source/core/html/HTMLOptionElement.cpp
@@ -330,20 +330,12 @@ bool HTMLOptionElement::isDisabledFormControl() const
 
 Node::InsertionNotificationRequest HTMLOptionElement::insertedInto(ContainerNode* insertionPoint)
 {
+    HTMLElement::insertedInto(insertionPoint);
     if (HTMLSelectElement* select = ownerSelectElement()) {
         select->setRecalcListItems();
-        // Do not call selected() since calling updateListItemSelectedStates()
-        // at this time won't do the right thing. (Why, exactly?)
-        if (m_isSelected) {
-            // FIXME: Might be better to call this unconditionally, always
-            // passing m_isSelected, rather than only calling it if we are
-            // selected.
-            select->optionSelectionStateChanged(this, true);
-            select->scrollToSelection();
-        }
+        select->optionInserted(*this, m_isSelected);
     }
-
-    return HTMLElement::insertedInto(insertionPoint);
+    return InsertionDone;
 }
 
 void HTMLOptionElement::removedFrom(ContainerNode* insertionPoint)
@@ -386,7 +378,7 @@ void HTMLOptionElement::didAddUserAgentShadowRoot(ShadowRoot& root)
 void HTMLOptionElement::updateLabel()
 {
     if (ShadowRoot* root = userAgentShadowRoot())
-        root->setTextContent(textIndentedToRespectGroupLabel());
+        root->setTextContent(text());
 }
 
 bool HTMLOptionElement::spatialNavigationFocused() const