Fix crash in HTMLInputElement::setupDateTimeChooserParameters

Source/core/html/forms/BaseMultipleFieldsDateAndTimeInputType.cpp

 /*
  * 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 308 matching lines @@
 }
 
 PassRefPtr<RenderStyle> BaseMultipleFieldsDateAndTimeInputType::customStyleForRenderer(PassRefPtr<RenderStyle> originalStyle)
 {
     EDisplay originalDisplay = originalStyle->display();
     EDisplay newDisplay = originalDisplay;
     if (originalDisplay == INLINE || originalDisplay == INLINE_BLOCK)
         newDisplay = INLINE_FLEX;
     else if (originalDisplay == BLOCK)
         newDisplay = FLEX;
-    TextDirection contentDirection = element().locale().isRTL() ? RTL : LTR;
+    TextDirection contentDirection = computedTextDirection();
     if (originalStyle->direction() == contentDirection && originalDisplay == newDisplay)
         return originalStyle;
 
     RefPtr<RenderStyle> style = RenderStyle::clone(originalStyle.get());
     style->setDirection(contentDirection);
     style->setDisplay(newDisplay);
     style->setUnique();
     return style.release();
 }
 
@@ skipping 268 matching lines @@
 
     if (element().isRequired() || !dateTimeEditElement()->anyEditableFieldsHaveValues()) {
         clearButton->setInlineStyleProperty(CSSPropertyOpacity, 0.0, CSSPrimitiveValue::CSS_NUMBER);
         clearButton->setInlineStyleProperty(CSSPropertyPointerEvents, CSSValueNone);
     } else {
         clearButton->removeInlineStyleProperty(CSSPropertyOpacity);
         clearButton->removeInlineStyleProperty(CSSPropertyPointerEvents);
     }
 }
 
+TextDirection BaseMultipleFieldsDateAndTimeInputType::computedTextDirection()
+{
+    return element().locale().isRTL() ? RTL : LTR;
+}
+
 } // namespace blink
 
 #endif