INPUT element: Updating value to the previous defaultValue should dispatch "change" event.

third_party/WebKit/Source/core/html/HTMLInputElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLInputElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLInputElement.cpp b/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
index 8642efce92e9f48d25823d94c16738ebd327937d..2c2cecd0395aed50927c30df90dd91b22abe9fa3 100644
--- a/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
@@ -718,6 +718,8 @@ void HTMLInputElement::parseAttribute(const QualifiedName& name,
       setNeedsStyleRecalc(
           SubtreeStyleChange,
           StyleChangeReasonForTracing::fromAttribute(valueAttr));
+      if (m_inputType->valueMode() == ValueMode::kValue)
+        setTextAsOfLastFormControlChangeEvent(sanitizeValue(value));
     }
     m_needsToUpdateViewValue = true;
     setNeedsValidityCheck();