Remove the compile time flag for DATALIST Element.

Source/core/html/BaseMultipleFieldsDateAndTimeInputType.cpp

Index: Source/core/html/BaseMultipleFieldsDateAndTimeInputType.cpp
diff --git a/Source/core/html/BaseMultipleFieldsDateAndTimeInputType.cpp b/Source/core/html/BaseMultipleFieldsDateAndTimeInputType.cpp
index 8df813983ed666d81ca16e8220aedf0685bee701..b78815f2308b88542b6fab283df464c041787de6 100644
--- a/Source/core/html/BaseMultipleFieldsDateAndTimeInputType.cpp
+++ b/Source/core/html/BaseMultipleFieldsDateAndTimeInputType.cpp
@@ -307,10 +307,8 @@ void BaseMultipleFieldsDateAndTimeInputType::createShadowSubtree()
     container->appendChild(spinButton);
 
     bool shouldAddPickerIndicator = false;
-#if ENABLE(DATALIST_ELEMENT)
     if (InputType::themeSupportsDataListUI(this))
         shouldAddPickerIndicator = true;
-#endif
     RefPtr<RenderTheme> theme = document->page() ? document->page()->theme() : RenderTheme::defaultTheme();
     if (theme->supportsCalendarPicker(formControlType())) {
         shouldAddPickerIndicator = true;
@@ -502,12 +500,10 @@ void BaseMultipleFieldsDateAndTimeInputType::valueAttributeChanged()
         updateInnerTextValue();
 }
 
-#if ENABLE(DATALIST_ELEMENT)
 void BaseMultipleFieldsDateAndTimeInputType::listAttributeTargetChanged()
 {
     updatePickerIndicatorVisibility();
 }
-#endif
 
 void BaseMultipleFieldsDateAndTimeInputType::updatePickerIndicatorVisibility()
 {
@@ -515,7 +511,6 @@ void BaseMultipleFieldsDateAndTimeInputType::updatePickerIndicatorVisibility()
         showPickerIndicator();
         return;
     }
-#if ENABLE(DATALIST_ELEMENT)
     if (HTMLDataListElement* dataList = element()->dataList()) {
         RefPtr<HTMLCollection> options = dataList->options();
         for (unsigned i = 0; HTMLOptionElement* option = toHTMLOptionElement(options->item(i)); ++i) {
@@ -526,7 +521,6 @@ void BaseMultipleFieldsDateAndTimeInputType::updatePickerIndicatorVisibility()
         }
     }
     hidePickerIndicator();
-#endif
 }
 
 void BaseMultipleFieldsDateAndTimeInputType::hidePickerIndicator()