Bug 1589270 - Part 1: Allow passing a specific status when disconnecting the child side, but only pass it to nsDocumentOpenInfo, not the load group. r=bzbarsky

Differential Revision: https://phabricator.services.mozilla.com/D49526

--HG--
extra : moz-landing-system : lando

netwerk/ipc/DocumentChannelChild.cpp

@@ -243,8 +243,18 @@ void DocumentChannelChild::ShutdownListeners(nsresult aStatusCode) {
   }
 }
 
-IPCResult DocumentChannelChild::RecvCancelForProcessSwitch() {
-  ShutdownListeners(NS_BINDING_ABORTED);
+IPCResult DocumentChannelChild::RecvDisconnectChildListeners(
+    const nsresult& aStatus) {
+  MOZ_ASSERT(NS_FAILED(aStatus));
+  // Make sure we remove from the load group before
+  // setting mStatus, as existing tests expect the
+  // status to be successful when we disconnect.
+  if (mLoadGroup) {
+    mLoadGroup->RemoveRequest(this, nullptr, aStatus);
+    mLoadGroup = nullptr;
+  }
+
+  ShutdownListeners(aStatus);
   return IPC_OK();
 }
 

netwerk/ipc/DocumentChannelChild.h

@@ -57,7 +57,7 @@ class DocumentChannelChild final : public PDocumentChannelChild,
 
   mozilla::ipc::IPCResult RecvFailedAsyncOpen(const nsresult& aStatusCode);
 
-  mozilla::ipc::IPCResult RecvCancelForProcessSwitch();
+  mozilla::ipc::IPCResult RecvDisconnectChildListeners(const nsresult& aStatus);
 
   mozilla::ipc::IPCResult RecvDeleteSelf();
 

netwerk/ipc/DocumentChannelParent.cpp

@@ -218,7 +218,7 @@ void DocumentChannelParent::FinishReplacementChannelSetup(bool aSucceeded) {
   nsresult rv;
 
   if (mDoingProcessSwitch && CanSend()) {
-    Unused << SendCancelForProcessSwitch();
+    Unused << SendDisconnectChildListeners(NS_BINDING_ABORTED);
   }
 
   nsCOMPtr<nsIParentChannel> redirectChannel;

netwerk/ipc/PDocumentChannel.ipdl

@@ -64,7 +64,8 @@ isThirdParty);
   // This message is sent to a child that has been redirected to another process.
   // As a consequence, it should cleanup the channel listeners and remove the
   // request from the loadGroup.
-  async CancelForProcessSwitch();
+  // aStatus must be an error result.
+  async DisconnectChildListeners(nsresult aStatus);
 
   async RedirectToRealChannel(uint32_t aRegistrarId,
                               nsIURI aURI,