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 fc4425ffdfbd3e0b92986e61c7e5d703af69c9c9..b588647c1921de4f8de743966d71162e29228f48 100644
--- a/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
@@ -104,6 +104,7 @@ HTMLInputElement::HTMLInputElement(Document& document, HTMLFormElement* form, bo
     , m_size(defaultSize)
     , m_maxLength(maximumLength)
     , m_minLength(0)
+    , m_positonInRadio(0)
     , m_maxResults(-1)
     , m_isChecked(false)
     , m_reflectsCheckedAttribute(true)
@@ -1749,6 +1750,23 @@ RadioButtonGroupScope* HTMLInputElement::radioButtonGroupScope() const
     return nullptr;
 }
 
+unsigned HTMLInputElement::positionInRadioGroup()
+{
+    RadioButtonGroupScope* scope = radioButtonGroupScope();
+    if (!scope)
+        return 0;
+    scope->updateGroupPosition(this);
+    return m_positonInRadio;
+}
+
+unsigned HTMLInputElement::sizeOfRadioGroup()
+{
+    RadioButtonGroupScope* scope = radioButtonGroupScope();
+    if (!scope)
+        return 0;
+    return scope->sizeOfGroup(this);
+}
+
 inline void HTMLInputElement::addToRadioButtonGroup()
 {
     if (RadioButtonGroupScope* scope = radioButtonGroupScope())