Fixed unnecessary Paste Popup showing issue when long press on ReadOnly/Disabled elements.

Source/core/rendering/HitTestResult.cpp

Index: Source/core/rendering/HitTestResult.cpp
diff --git a/Source/core/rendering/HitTestResult.cpp b/Source/core/rendering/HitTestResult.cpp
index 63f71c09e4fceeb2b6fd70a57a1efe9393783ba1..6bc60977c4dda8b17e1ed51068f5d9fd0a79c342 100644
--- a/Source/core/rendering/HitTestResult.cpp
+++ b/Source/core/rendering/HitTestResult.cpp
@@ -378,10 +378,10 @@ bool HitTestResult::isContentEditable() const
     if (!m_innerNonSharedNode)
         return false;
 
-    if (isHTMLTextAreaElement(*m_innerNonSharedNode))
+    if (isHTMLTextAreaElement(*m_innerNonSharedNode) && !toHTMLFormControlElement(m_innerNonSharedNode)->isDisabledOrReadOnly())

[yosin_UTC9, 2014/05/07 01:12:03]

nit: Can we move |isDisabledOrReadOnly()| call to |return| statement? We don't
need to call |isHTMLInputELement()| and |rendereIsEditable()|.

         return true;
 
-    if (isHTMLInputElement(*m_innerNonSharedNode))
+    if (isHTMLInputElement(*m_innerNonSharedNode) && !toHTMLFormControlElement(m_innerNonSharedNode)->isDisabledOrReadOnly())

[yosin_UTC9, 2014/05/07 01:12:03]

nit: Can we move |isDisabledOrReadOnly()| call to |return| statement? We don't
need to call and |rendereIsEditable()|.

         return toHTMLInputElement(*m_innerNonSharedNode).isTextField();
 
     return m_innerNonSharedNode->rendererIsEditable();