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-rw-r--r--toolkit/modules/addons/WebRequestContent.js10
1 files changed, 10 insertions, 0 deletions
diff --git a/toolkit/modules/addons/WebRequestContent.js b/toolkit/modules/addons/WebRequestContent.js
index 219675e5b..f044a1cd4 100644
--- a/toolkit/modules/addons/WebRequestContent.js
+++ b/toolkit/modules/addons/WebRequestContent.js
@@ -80,6 +80,16 @@ var ContentPolicy = {
shouldLoad(policyType, contentLocation, requestOrigin,
node, mimeTypeGuess, extra, requestPrincipal) {
+
+ // Loads of TYPE_DOCUMENT and TYPE_SUBDOCUMENT perform a ConPol check
+ // within docshell as well as within the ContentSecurityManager. To avoid
+ // duplicate evaluations we ignore ConPol checks performed within docShell.
+ if (extra instanceof Ci.nsISupportsString) {
+ if (extra.data === "conPolCheckFromDocShell") {
+ return Ci.nsIContentPolicy.ACCEPT;
+ }
+ }
+
if (requestPrincipal &&
Services.scriptSecurityManager.isSystemPrincipal(requestPrincipal)) {
return Ci.nsIContentPolicy.ACCEPT;