Oilpan: Remove guardRef and guardDeref from TreeScope.

Source/core/html/forms/BaseMultipleFieldsDateAndTimeInputType.cpp

Index: Source/core/html/forms/BaseMultipleFieldsDateAndTimeInputType.cpp
diff --git a/Source/core/html/forms/BaseMultipleFieldsDateAndTimeInputType.cpp b/Source/core/html/forms/BaseMultipleFieldsDateAndTimeInputType.cpp
index dd9b8033979a66dd8933d1951c384e7751a79aa2..80db48e9d08bb2d79af0d415fe1c071b40b58c8c 100644
--- a/Source/core/html/forms/BaseMultipleFieldsDateAndTimeInputType.cpp
+++ b/Source/core/html/forms/BaseMultipleFieldsDateAndTimeInputType.cpp
@@ -293,6 +293,7 @@ BaseMultipleFieldsDateAndTimeInputType::BaseMultipleFieldsDateAndTimeInputType(H
 
 BaseMultipleFieldsDateAndTimeInputType::~BaseMultipleFieldsDateAndTimeInputType()
 {
+#if !ENABLE(OILPAN)
     if (SpinButtonElement* element = spinButtonElement())
         element->removeSpinButtonOwner();
     if (ClearButtonElement* element = clearButtonElement())
@@ -301,6 +302,7 @@ BaseMultipleFieldsDateAndTimeInputType::~BaseMultipleFieldsDateAndTimeInputType(
         element->removeEditControlOwner();
     if (PickerIndicatorElement* element = pickerIndicatorElement())
         element->removePickerIndicatorOwner();
+#endif
 }
 
 String BaseMultipleFieldsDateAndTimeInputType::badInputText() const