Prepare for date/time input datalist support

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 e595534e97baa6d5bbfe49ba8990e8f6428a1663..d8095fe41d2c55a1f7f4d47aa075ed3c7c46eb36 100644
--- a/Source/core/html/forms/BaseMultipleFieldsDateAndTimeInputType.cpp
+++ b/Source/core/html/forms/BaseMultipleFieldsDateAndTimeInputType.cpp
@@ -262,6 +262,14 @@ void BaseMultipleFieldsDateAndTimeInputType::pickerIndicatorChooseValue(const St
         edit->setOnlyYearMonthDay(date);
 }
 
+void BaseMultipleFieldsDateAndTimeInputType::pickerIndicatorChooseValue(double value)
+{
+    if (std::isnan(value))
+        element().setValue(String(), DispatchInputAndChangeEvent);

[tkent, 2013/11/07 01:43:10]

Ditto.

+    else
+        element().setValueAsNumber(value, ASSERT_NO_EXCEPTION, DispatchInputAndChangeEvent);
+}
+
 bool BaseMultipleFieldsDateAndTimeInputType::setupDateTimeChooserParameters(DateTimeChooserParameters& parameters)
 {
     return element().setupDateTimeChooserParameters(parameters);