node.cloneNode() should clone the value of file upload elements

Source/core/html/HTMLInputElement.cpp

Index: Source/core/html/HTMLInputElement.cpp
diff --git a/Source/core/html/HTMLInputElement.cpp b/Source/core/html/HTMLInputElement.cpp
index 7952c58f83be743b8803e9610ed433ab59f45558..29bf33fc78ad636a09343b5827f18ffcc8d7a112 100644
--- a/Source/core/html/HTMLInputElement.cpp
+++ b/Source/core/html/HTMLInputElement.cpp
@@ -909,6 +909,8 @@ void HTMLInputElement::copyNonAttributePropertiesFromElement(const Element& sour
     setChecked(sourceElement.m_isChecked);
     m_reflectsCheckedAttribute = sourceElement.m_reflectsCheckedAttribute;
     m_isIndeterminate = sourceElement.m_isIndeterminate;
+    if (isFileUpload())

[tkent, 2014/05/08 07:57:20]

Please do not add type checks to HTMLInputElement.
The code change in this function should be just one line, something like:
    m_inputType->copyNonAttributeProperties(sourceElement);

[gnana, 2014/05/08 08:19:18]

Done.

+        m_inputType->copyFiles(sourceElement.files());
 
     HTMLTextFormControlElement::copyNonAttributePropertiesFromElement(source);
 
@@ -1319,7 +1321,7 @@ KURL HTMLInputElement::src() const
     return document().completeURL(fastGetAttribute(srcAttr));
 }
 
-FileList* HTMLInputElement::files()
+FileList* HTMLInputElement::files() const
 {
     return m_inputType->files();
 }