posinset and setsize for input type, radio, exposed in AX tree

third_party/WebKit/Source/core/html/HTMLInputElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLInputElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLInputElement.cpp b/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
index fcd36e4c43633421e0013b08ff347aedf3399e9b..c4da326e2c1b24a97bde0d42f2b47d8d1171a497 100644
--- a/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
@@ -1648,6 +1648,11 @@ bool HTMLInputElement::isImage() const
     return m_inputType->isImage();
 }
 
+bool HTMLInputElement::isRadioButton() const
+{
+    return m_inputType->isRadioButton();
+}
+
 bool HTMLInputElement::isEnumeratable() const
 {
     return m_inputType->isEnumeratable();
@@ -1759,6 +1764,14 @@ RadioButtonGroupScope* HTMLInputElement::radioButtonGroupScope() const
     return nullptr;
 }
 
+unsigned HTMLInputElement::sizeOfRadioGroup() const
+{
+    RadioButtonGroupScope* scope = radioButtonGroupScope();
+    if (!scope)
+        return 0;
+    return scope->sizeOfGroup(this);
+}
+
 inline void HTMLInputElement::addToRadioButtonGroup()
 {
     if (RadioButtonGroupScope* scope = radioButtonGroupScope())