[oilpan] Completely move HTMLFormControlElement's hierarchy to the managed heap

Source/WebKit/chromium/src/WebInputElement.cpp

Index: Source/WebKit/chromium/src/WebInputElement.cpp
diff --git a/Source/WebKit/chromium/src/WebInputElement.cpp b/Source/WebKit/chromium/src/WebInputElement.cpp
index 1131f943b01fa6cca0080a9bbee9c514a34560fd..eb123a4c42ec49ed2889006b0387acbb60e0c545 100644
--- a/Source/WebKit/chromium/src/WebInputElement.cpp
+++ b/Source/WebKit/chromium/src/WebInputElement.cpp
@@ -41,6 +41,7 @@
 #include "core/html/HTMLInputElement.h"
 #include "core/html/shadow/TextControlInnerElements.h"
 #include "core/html/shadow/TextFieldDecorationElement.h"
+#include "heap/Handle.h"
 #include <public/WebString.h>
 #include <wtf/PassRefPtr.h>
 
@@ -258,25 +259,25 @@ WebElement WebInputElement::decorationElementFor(WebTextFieldDecoratorClient* de
     return WebElement();
 }
 
-WebInputElement::WebInputElement(const PassRefPtr<HTMLInputElement>& elem)
+WebInputElement::WebInputElement(Handle<HTMLInputElement> elem)
     : WebFormControlElement(elem)
 {
 }
 
-WebInputElement& WebInputElement::operator=(const PassRefPtr<HTMLInputElement>& elem)
+WebInputElement& WebInputElement::operator=(Handle<HTMLInputElement> elem)
 {
-    m_private = elem;
+    m_private = elem.passRefPtr();
     return *this;
 }
 
-WebInputElement::operator PassRefPtr<HTMLInputElement>() const
+WebInputElement::operator Handle<HTMLInputElement>() const
 {
-    return static_cast<HTMLInputElement*>(m_private.get());
+    return Handle<HTMLInputElement>(static_cast<HTMLInputElement*>(m_private.get()));
 }
 
 WebInputElement* toWebInputElement(WebElement* webElement)
 {
-    HTMLInputElement* inputElement = webElement->unwrap<Element>()->toInputElement();
+    Handle<HTMLInputElement> inputElement = webElement->unwrap<Element>()->toInputElement();
     if (!inputElement)
         return 0;