Clean up unused AX APIs.

Source/web/WebAXObject.cpp

Index: Source/web/WebAXObject.cpp
diff --git a/Source/web/WebAXObject.cpp b/Source/web/WebAXObject.cpp
index 3b89c72dc2c5143a3c90fe5b2882c0a317d755f2..51d930305cbdedbf283cf125c9f3883ad0188fd4 100644
--- a/Source/web/WebAXObject.cpp
+++ b/Source/web/WebAXObject.cpp
@@ -225,14 +225,6 @@ bool WebAXObject::isAnchor() const
     return m_private->isAnchor();
 }
 
-WebAXOptionalBool WebAXObject::isAriaGrabbed() const
-{
-    if (isDetached())
-        return WebAXOptionalBoolUndefined;
-
-    return static_cast<WebAXOptionalBool>(m_private->isAriaGrabbed());
-}
-
 bool WebAXObject::isAriaReadOnly() const
 {
     if (isDetached())
@@ -496,14 +488,6 @@ bool WebAXObject::ariaControls(WebVector<WebAXObject>& controlsElements) const
     return true;
 }
 
-WebString WebAXObject::ariaDropEffect() const
-{
-    if (isDetached())
-        return WebString();
-
-    return WebString(m_private->ariaDropEffect());
-}
-
 bool WebAXObject::ariaHasPopup() const
 {
     if (isDetached())
@@ -1242,14 +1226,6 @@ bool WebAXObject::lineBreaks(WebVector<int>& result) const
     return true;
 }
 
-WebString WebAXObject::textInputType() const
-{
-    if (isDetached())
-        return WebString();
-
-    return WebString(m_private->textInputType());
-}
-
 unsigned WebAXObject::columnCount() const
 {
     if (isDetached())