input[type=datetime-local], input[type=month] and input[type=week] warn if a specified value is an …

third_party/WebKit/Source/core/html/forms/WeekInputType.cpp

Index: third_party/WebKit/Source/core/html/forms/WeekInputType.cpp
diff --git a/third_party/WebKit/Source/core/html/forms/WeekInputType.cpp b/third_party/WebKit/Source/core/html/forms/WeekInputType.cpp
index d32765ff52c63578fce176a79230c2bb69bce196..8acd1e3cd6287a46ba783cf82345e625d5c4b675 100644
--- a/third_party/WebKit/Source/core/html/forms/WeekInputType.cpp
+++ b/third_party/WebKit/Source/core/html/forms/WeekInputType.cpp
@@ -82,6 +82,11 @@ bool WeekInputType::setMillisecondToDateComponents(double value, DateComponents*
     return date->setMillisecondsSinceEpochForWeek(value);
 }
 
+void WeekInputType::warnIfValueIsInvalid(const String& value) const
+{
+    if (value != element().sanitizeValue(value))
+        addWarningToConsole("The specified value %s does not conform to the required format.  The format is \"yyyy-Www\" where yyyy is year in four or more digits, and ww is 01-53.", value);
+}
 
 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
 String WeekInputType::formatDateTimeFieldsState(const DateTimeFieldsState& dateTimeFieldsState) const