Bug 1917466 - Cache: Add handling for invalidated directory locks; r=dom-storage-reviewers,asuth

Differential Revision: https://phabricator.services.mozilla.com/D219737

dom/cache/Context.cpp

@@ -239,7 +239,7 @@ void Context::QuotaInitRunnable::DirectoryLockAcquired(DirectoryLock* aLock) {
   MOZ_DIAGNOSTIC_ASSERT(mDirectoryLock->Id() >= 0);
   mDirectoryMetadata->mDirectoryLockId = mDirectoryLock->Id();
 
-  if (mCanceled) {
+  if (mCanceled || mDirectoryLock->Invalidated()) {
     Complete(NS_ERROR_ABORT);
     return;
   }

dom/cache/test/xpcshell/xpcshell.toml

@@ -23,4 +23,3 @@ skip-if = ["true"]
 ["test_schema_26_upgrade.js"]
 
 ["test_slowStorageInitialization.js"]
-skip-if = ["true"]