fall back on nsILoadGroup when nsIChannel has no nsIPrompt.

Bug 72111; r=bbaetz, sr=darin

netwerk/protocol/ftp/src/nsFtpConnectionThread.cpp

@@ -1806,6 +1806,16 @@ nsFtpState::Init(nsIFTPChannel* aChannel,
 
     mKeepRunning = PR_TRUE;
     mPrompter = aPrompter;
+    if (!mPrompter) {
+        nsCOMPtr<nsILoadGroup> ldGrp;
+        aChannel->GetLoadGroup(getter_AddRefs(ldGrp));
+        if (ldGrp) {
+            nsCOMPtr<nsIInterfaceRequestor> cbs;
+            rv = ldGrp->GetNotificationCallbacks(getter_AddRefs(cbs));
+            if (NS_SUCCEEDED(rv))
+                mPrompter = do_GetInterface(cbs);
+        }
+    }
     mFTPEventSink = sink;
     mAuthPrompter = aAuthPrompter;
     mCacheEntry = cacheEntry;

netwerk/protocol/gopher/src/nsGopherChannel.cpp

@@ -582,8 +582,16 @@ nsGopherChannel::SendRequest(nsITransport* aTransport)
             // We require a query string here - if we don't have one,
             // then we need to ask the user
             if (!mPrompter) {
-                NS_ERROR("We need a prompter!");
-                return NS_ERROR_FAILURE;
+                if (mLoadGroup) {
+                    nsCOMPtr<nsIInterfaceRequestor> cbs;
+                    rv = mLoadGroup->GetNotificationCallbacks(getter_AddRefs(cbs));
+                    if (NS_SUCCEEDED(rv))
+                        mPrompter = do_GetInterface(cbs);
+                }
+                if (!mPrompter) {
+                    NS_ERROR("We need a prompter!");
+                    return NS_ERROR_FAILURE;
+                }
             }
             nsXPIDLString search;
             PRBool res;