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

Source/core/html/DateInputType.cpp

Index: Source/core/html/DateInputType.cpp
diff --git a/Source/core/html/DateInputType.cpp b/Source/core/html/DateInputType.cpp
index 2fa4b01a8762e449d8690bd5ae52984221e56a3b..006b69d7285cac935aa05a5eb61abf80eeff95e0 100644
--- a/Source/core/html/DateInputType.cpp
+++ b/Source/core/html/DateInputType.cpp
@@ -50,12 +50,12 @@ static const int dateDefaultStep = 1;
 static const int dateDefaultStepBase = 0;
 static const int dateStepScaleFactor = 86400000;
 
-inline DateInputType::DateInputType(HTMLInputElement* element)
+inline DateInputType::DateInputType(Handle<HTMLInputElement> element)
     : BaseDateInputType(element)
 {
 }
 
-PassOwnPtr<InputType> DateInputType::create(HTMLInputElement* element)
+PassOwnPtr<InputType> DateInputType::create(Handle<HTMLInputElement> element)
 {
     return adoptPtr(new DateInputType(element));
 }