Reapply the patch r191685 with fixing the regression issue.

Source/core/html/HTMLTextAreaElement.cpp

Index: Source/core/html/HTMLTextAreaElement.cpp
diff --git a/Source/core/html/HTMLTextAreaElement.cpp b/Source/core/html/HTMLTextAreaElement.cpp
index 8c6954c4eb84d1864d81912f8b070804683107fc..fab21906df23d970945ec0a19dc9e7f61478aa14 100644
--- a/Source/core/html/HTMLTextAreaElement.cpp
+++ b/Source/core/html/HTMLTextAreaElement.cpp
@@ -639,4 +639,12 @@ const AtomicString& HTMLTextAreaElement::defaultAutocapitalize() const
     return sentences;
 }
 
+void HTMLTextAreaElement::copyNonAttributePropertiesFromElement(const Element& source)
+{
+    const HTMLTextAreaElement& sourceElement = static_cast<const HTMLTextAreaElement&>(source);
+    setValueCommon(sourceElement.value(), DispatchNoEvent, SetSeletion);
+    m_isDirty = sourceElement.m_isDirty;
+    HTMLTextFormControlElement::copyNonAttributePropertiesFromElement(source);
+}
+
 } // namespace blink