adding accessor for nsIPrompt member variable. bugs 25684,28594. r=gagan@netscape.com

netwerk/protocol/http/public/nsIHTTPChannel.idl

@@ -28,6 +28,7 @@ interface nsISimpleEnumerator;
 interface nsIAtom;
 interface nsIInputStream;
 interface nsIURI;
+interface nsIPrompt;
 
 [scriptable, uuid(35c00430-1938-11d3-933a-000064657374)]
 interface nsIHTTPChannel : nsIChannel
@@ -83,12 +84,14 @@ interface nsIHTTPChannel : nsIChannel
     
     readonly attribute nsIStreamListener ResponseDataListener;
 	
-	readonly attribute string Charset;
+    readonly attribute string Charset;
 
-	attribute PRBool AuthTriedWithPrehost;
+    attribute PRBool AuthTriedWithPrehost;
 
     readonly attribute PRBool UsingProxy;
 
+    readonly attribute nsIPrompt prompter;
+
     /*
        This string if set is used for forming the final request. So if you 
        call SetProxyRequestURI(foo) on an HTTP Channel, the outbound

netwerk/protocol/http/src/nsHTTPChannel.cpp

@@ -2328,6 +2328,15 @@ nsHTTPChannel::GetUsingProxy(PRBool *aUsingProxy)
     return NS_OK;
 }
 
+NS_IMETHODIMP
+nsHTTPChannel::GetPrompter(nsIPrompt **aPrompter) {
+
+  if (!aPrompter)
+    return NS_ERROR_NULL_POINTER;
+  *aPrompter = mPrompter;
+  NS_IF_ADDREF(*aPrompter);
+  return NS_OK;
+}
 
 NS_IMETHODIMP 
 nsHTTPChannel::GetSecurityInfo(nsISupports * *aSecurityInfo)