Option, checkbox and radio should support ':default' selector

third_party/WebKit/Source/core/html/forms/BaseCheckableInputType.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 70 matching lines @@
 }
 
 // FIXME: Could share this with BaseClickableWithKeyInputType and RangeInputType if we had a common base class.
 void BaseCheckableInputType::accessKeyAction(bool sendMouseEvents)
 {
     InputType::accessKeyAction(sendMouseEvents);
 
     element().dispatchSimulatedClick(0, sendMouseEvents ? SendMouseUpDownEvents : SendNoEvents);
 }
 
+bool BaseCheckableInputType::matchesDefaultPseudoClass()
+{
+    return element().fastHasAttribute(checkedAttr);
+}
+
 String BaseCheckableInputType::fallbackValue() const
 {
     return "on";
 }
 
 bool BaseCheckableInputType::storesValueSeparateFromAttribute()
 {
     return false;
 }
 
@@ skipping 12 matching lines @@
 {
     return true;
 }
 
 bool BaseCheckableInputType::shouldDispatchFormControlChangeEvent(String& oldValue, String& newValue)
 {
     return oldValue != newValue;
 }
 
 } // namespace blink