Bug 345993 - Make the full Build ID more accessible to testers. patch=zach, r=rob_strong, sr=jst

dom/public/idl/base/nsIDOMNavigator.idl

@@ -39,7 +39,7 @@
 
 #include "domstubs.idl"
 
-[scriptable, uuid(8758b72b-63d4-4685-b908-4275126410fb)]
+[scriptable, uuid(8e150a70-3e51-45df-bee3-77505fbe016c)]
 interface nsIDOMNavigator : nsISupports
 {
   readonly attribute DOMString           appCodeName;
@@ -58,6 +58,7 @@ interface nsIDOMNavigator : nsISupports
   readonly attribute DOMString           userAgent;
   readonly attribute boolean             cookieEnabled;
   readonly attribute boolean             onLine;
+  readonly attribute DOMString           buildID;
 
   boolean                   javaEnabled();
   boolean                   taintEnabled();

dom/src/base/nsGlobalWindow.cpp

@@ -186,6 +186,8 @@
 static PRLogModuleInfo* gDOMLeakPRLog;
 #endif
 
+#include "nsBuildID.h"
+
 nsIFactory *nsGlobalWindow::sComputedDOMStyleFactory   = nsnull;
 
 static nsIEntropyCollector *gEntropyCollector          = nsnull;
@@ -7876,6 +7878,18 @@ nsNavigator::GetOnLine(PRBool* aOnline)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsNavigator::GetBuildID(nsAString& aBuildID)
+{
+  nsresult rv = NS_ERROR_FAILURE;
+  long buildID = NS_BUILD_ID;
+  if (buildID) {
+    aBuildID = NS_LITERAL_STRING(NS_STRINGIFY(NS_BUILD_ID));
+    rv = NS_OK;
+  }
+  return rv;
+}
+
 NS_IMETHODIMP
 nsNavigator::JavaEnabled(PRBool *aReturn)
 {

toolkit/content/about.xhtml

@@ -75,7 +75,10 @@
         var list = document.getElementById("aboutPageList");
         var listItem = list.appendChild(document.createElement("li"));
         listItem.appendChild(document.createTextNode("&about.buildIdentifier;"));
-        listItem.appendChild(document.createTextNode(ua));
+        // replace the shortened 8-digit build id in the UA with the full 10-digit 
+        // build id from navigator.buildID
+        var newUA = ua.replace(/\/\d{8}/, navigator.buildID);
+        listItem.appendChild(document.createTextNode(newUA));
       }
     </script>
   </ul>