Oilpan: move BaseChooserOnlyDateAndTimeInputType to the heap.

third_party/WebKit/Source/core/html/forms/MonthInputType.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 29 matching lines @@
 using BaseMonthInputType = BaseMultipleFieldsDateAndTimeInputType;
 #else
 using BaseMonthInputType = BaseChooserOnlyDateAndTimeInputType;
 #endif
 
 class MonthInputType final : public BaseMonthInputType {
 public:
     static PassRefPtrWillBeRawPtr<InputType> create(HTMLInputElement&);
 
 private:
-    MonthInputType(HTMLInputElement& element) : BaseMonthInputType(element) { }
+    explicit MonthInputType(HTMLInputElement& element) : BaseMonthInputType(element) { }
+
     void countUsage() override;
     const AtomicString& formControlType() const override;
     double valueAsDate() const override;
     String serializeWithMilliseconds(double) const override;
     Decimal parseToNumber(const String&, const Decimal&) const override;
     Decimal defaultValueForStepUp() const override;
     StepRange createStepRange(AnyStepHandling) const override;
     bool parseToDateComponentsInternal(const String&, DateComponents*) const override;
     bool setMillisecondToDateComponents(double, DateComponents*) const override;
     bool canSetSuggestedValue() override;
 
 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
     // BaseMultipleFieldsDateAndTimeInputType functions
     String formatDateTimeFieldsState(const DateTimeFieldsState&) const override;
     void setupLayoutParameters(DateTimeEditElement::LayoutParameters&, const DateComponents&) const override;
     bool isValidFormat(bool hasYear, bool hasMonth, bool hasWeek, bool hasDay, bool hasAMPM, bool hasHour, bool hasMinute, bool hasSecond) const override;
 #endif
 };
 
 } // namespace blink
 
 #endif // MonthInputType_h