Bug 1663488 - Forward ChildSHistory::Reload to the parent process with session history in the parent. r=smaug

Depends on D89420

Differential Revision: https://phabricator.services.mozilla.com/D89421

docshell/shistory/ChildSHistory.cpp

@@ -6,6 +6,7 @@
 
 #include "mozilla/dom/ChildSHistory.h"
 #include "mozilla/dom/ChildSHistoryBinding.h"
+#include "mozilla/dom/CanonicalBrowsingContext.h"
 #include "mozilla/dom/ContentChild.h"
 #include "mozilla/dom/ContentFrameMessageManager.h"
 #include "mozilla/StaticPrefs_fission.h"
@@ -105,6 +106,20 @@ void ChildSHistory::SetIndexAndLength(uint32_t aIndex, uint32_t aLength,
 }
 
 void ChildSHistory::Reload(uint32_t aReloadFlags, ErrorResult& aRv) {
+  if (StaticPrefs::fission_sessionHistoryInParent()) {
+    if (XRE_IsParentProcess()) {
+      nsISHistory* shistory =
+          mBrowsingContext->Canonical()->GetSessionHistory();
+      if (shistory) {
+        aRv = shistory->Reload(aReloadFlags);
+      }
+    } else {
+      ContentChild::GetSingleton()->SendHistoryReload(mBrowsingContext,
+                                                      aReloadFlags);
+    }
+
+    return;
+  }
   aRv = mHistory->Reload(aReloadFlags);
 }
 

dom/ipc/ContentParent.cpp

@@ -7072,6 +7072,18 @@ mozilla::ipc::IPCResult ContentParent::RecvRemoveFromSessionHistory(
   return IPC_OK();
 }
 
+mozilla::ipc::IPCResult ContentParent::RecvHistoryReload(
+    const MaybeDiscarded<BrowsingContext>& aContext,
+    const uint32_t aReloadFlags) {
+  if (!aContext.IsDiscarded()) {
+    nsISHistory* shistory = aContext.get_canonical()->GetSessionHistory();
+    if (shistory) {
+      shistory->Reload(aReloadFlags);
+    }
+  }
+  return IPC_OK();
+}
+
 mozilla::ipc::IPCResult ContentParent::RecvCommitWindowContextTransaction(
     const MaybeDiscarded<WindowContext>& aContext,
     WindowContext::BaseTransaction&& aTransaction, uint64_t aEpoch) {

dom/ipc/ContentParent.h

@@ -1379,6 +1379,10 @@ class ContentParent final
   mozilla::ipc::IPCResult RecvRemoveFromSessionHistory(
       const MaybeDiscarded<BrowsingContext>& aContext);
 
+  mozilla::ipc::IPCResult RecvHistoryReload(
+      const MaybeDiscarded<BrowsingContext>& aContext,
+      const uint32_t aReloadFlags);
+
   // Notify the ContentChild to enable the input event prioritization when
   // initializing.
   void MaybeEnableRemoteInputEventQueue();

dom/ipc/PContent.ipdl

@@ -1668,6 +1668,8 @@ parent:
      */
     async AbortOtherOrientationPendingPromises(MaybeDiscardedBrowsingContext aContext);
 
+    async HistoryReload(MaybeDiscardedBrowsingContext aContext, uint32_t aReloadFlags);
+
     async NotifyOnHistoryReload(MaybeDiscardedBrowsingContext aContext)
             returns (bool canReload, nsDocShellLoadState? loadState,
                      bool? reloadActiveEntry);