Bug 1719539 - Fix Pocket button csp for saved panel in debug mode r=ckerschb

Differential Revision: https://phabricator.services.mozilla.com/D119332

dom/security/nsContentSecurityUtils.cpp

@@ -963,7 +963,8 @@ void nsContentSecurityUtils::AssertAboutPageHasCSP(Document* aDocument) {
                  StringBeginsWith(aboutSpec, "about:logins"_ns) ||
                  StringBeginsWith(aboutSpec, "about:home"_ns) ||
                  StringBeginsWith(aboutSpec, "about:welcome"_ns) ||
-                 StringBeginsWith(aboutSpec, "about:devtools"_ns),
+                 StringBeginsWith(aboutSpec, "about:devtools"_ns) ||
+                 StringBeginsWith(aboutSpec, "about:pocket-saved"_ns),
              "about: page must not contain a CSP including a web scheme");
 
   if (aDocument->IsExtensionPage()) {