--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/internal/mozilla/nsIPrefBranch2.d	Fri Jan 16 12:49:08 2009 +0100
@@ -0,0 +1,25 @@
+module dwt.internal.mozilla.nsIPrefBranch2;
+
+import dwt.internal.mozilla.Common;
+import dwt.internal.mozilla.nsID;
+import dwt.internal.mozilla.nsISupports;
+import dwt.internal.mozilla.nsIPrefBranch;
+import dwt.internal.mozilla.nsIObserver; 
+
+const char[] NS_IPREFBRANCH2_IID_STR = "74567534-eb94-4b1c-8f45-389643bfc555";
+
+const nsIID NS_IPREFBRANCH2_IID= 
+  {0x74567534, 0xeb94, 0x4b1c, 
+    [ 0x8f, 0x45, 0x38, 0x96, 0x43, 0xbf, 0xc5, 0x55 ]};
+
+interface nsIPrefBranch2 : nsIPrefBranch {
+
+  static const char[] IID_STR = NS_IPREFBRANCH2_IID_STR;
+  static const nsIID IID = NS_IPREFBRANCH2_IID;
+
+extern(System):
+  nsresult AddObserver(char *aDomain, nsIObserver aObserver, PRBool aHoldWeak);
+  nsresult RemoveObserver(char *aDomain, nsIObserver aObserver);
+
+}
+