bug 463255 - Display website for feed message in headers, step 1: display the header, r=IanN sr=Neil

mailnews/base/resources/content/messenger.css

@@ -83,6 +83,10 @@ mail-headerfield {
   -moz-binding: url("chrome://messenger/content/mailWidgets.xml#mail-headerfield");
 }
 
+mail-urlfield {
+  -moz-binding: url("chrome://messenger/content/mailWidgets.xml#mail-urlfield");
+}
+
 mail-tagfield {
   -moz-binding: url("chrome://messenger/content/mailWidgets.xml#mail-headerfield-tags");
 }

mailnews/base/resources/content/msgHdrViewOverlay.js

@@ -126,6 +126,7 @@ var gExpandedHeaderList = [ {name:"subject"},
                             {name:"newsgroups", outputFunction:OutputNewsgroups},
                             {name:"references", outputFunction:OutputMessageIds},
                             {name:"followup-to", outputFunction:OutputNewsgroups},
+                            {name:"content-base"},
                             {name:"tags"}];
 
 // Now, for each view the message pane can generate, we need a global table of headerEntries. These

mailnews/base/resources/content/msgHdrViewOverlay.xul

@@ -195,6 +195,7 @@
     <mail-messageids-headerfield id="expandedin-reply-toBox" label="&inReplyToField.label;" collapsed="true"/>
     <mail-messageids-headerfield id="expandedreferencesBox" label="&referencesField.label;" collapsed="true"/>
     <mail-tagfield id="expandedtagsBox" label="&tagsHdr.label;" collapsed="true"/>
+    <mail-urlfield id="expandedcontent-baseBox" label="&originalWebsite.label;" collapsed="true"/>
     <mail-headerfield keywordrelated="true" id="expandeduser-agentBox"  label="&userAgentField.label;"  collapsed="true"/>
   </vbox>