Revert 105710 - Introduce RadioButtonGroup class to keep track of the group members and required st…

Source/WebCore/html/RadioInputType.cpp

Index: Source/WebCore/html/RadioInputType.cpp
===================================================================
--- Source/WebCore/html/RadioInputType.cpp	(revision 111481)
+++ Source/WebCore/html/RadioInputType.cpp	(working copy)
@@ -48,7 +48,7 @@
 
 bool RadioInputType::valueMissing(const String&) const
 {
-    return element()->checkedRadioButtons().isInRequiredGroup(element()) && !element()->checkedRadioButtons().checkedButtonForGroup(element()->name());
+    return !element()->checkedRadioButtons().checkedButtonForGroup(element()->name());
 }
 
 String RadioInputType::valueMissingText() const
@@ -133,6 +133,12 @@
     return element()->checked() || !element()->checkedRadioButtons().checkedButtonForGroup(element()->name());
 }
 
+void RadioInputType::attach()
+{
+    InputType::attach();
+    element()->updateCheckedRadioButtons();
+}
+
 bool RadioInputType::shouldSendChangeEventAfterCheckedChanged()
 {
     // Don't send a change event for a radio button that's getting unchecked.