Use C++11 features in core/html

Source/core/html/forms/RadioButtonGroupScope.cpp

Index: Source/core/html/forms/RadioButtonGroupScope.cpp
diff --git a/Source/core/html/forms/RadioButtonGroupScope.cpp b/Source/core/html/forms/RadioButtonGroupScope.cpp
index 4e4c55a50d4bfef96213a4bceae6ebecd33ac5cb..c2deda3266fb1726f6011ac83d42961790aa0444 100644
--- a/Source/core/html/forms/RadioButtonGroupScope.cpp
+++ b/Source/core/html/forms/RadioButtonGroupScope.cpp
@@ -113,10 +113,8 @@ void RadioButtonGroup::updateCheckedState(HTMLInputElement* button)
     }
     if (wasValid != isValid())
         setNeedsValidityCheckForAllButtons();
-    typedef WillBeHeapHashSet<RawPtrWillBeMember<HTMLInputElement> >::const_iterator Iterator;
-    Iterator end = m_members.end();
-    for (Iterator it = m_members.begin(); it != end; ++it) {
-        (*it)->pseudoStateChanged(CSSSelector::PseudoIndeterminate);
+    for (const auto& inputElement : m_members) {
+        inputElement->pseudoStateChanged(CSSSelector::PseudoIndeterminate);
     }
 }
 
@@ -165,10 +163,8 @@ void RadioButtonGroup::remove(HTMLInputElement* button)
 
 void RadioButtonGroup::setNeedsValidityCheckForAllButtons()
 {
-    typedef WillBeHeapHashSet<RawPtrWillBeMember<HTMLInputElement> >::const_iterator Iterator;
-    Iterator end = m_members.end();
-    for (Iterator it = m_members.begin(); it != end; ++it) {
-        HTMLInputElement* button = *it;
+    for (const auto& inputElement : m_members) {
+        HTMLInputElement* button = inputElement;
         ASSERT(button->type() == InputTypeNames::radio);
         button->setNeedsValidityCheck();
     }