Bug 1391693 P3 Allow CSP report channels to be internally redirected. r=ckerschb

dom/security/nsCSPContext.cpp

@@ -1528,6 +1528,11 @@ CSPReportRedirectSink::AsyncOnChannelRedirect(nsIChannel* aOldChannel,
                                               uint32_t aRedirFlags,
                                               nsIAsyncVerifyRedirectCallback* aCallback)
 {
+  if (aRedirFlags & nsIChannelEventSink::REDIRECT_INTERNAL) {
+    aCallback->OnRedirectVerifyCallback(NS_OK);
+    return NS_OK;
+  }
+
   // cancel the old channel so XHR failure callback happens
   nsresult rv = aOldChannel->Cancel(NS_ERROR_ABORT);
   NS_ENSURE_SUCCESS(rv, rv);