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diff --git a/dom/ipc/WindowGlobalChild.h b/dom/ipc/WindowGlobalChild.h
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+/* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8 -*- */
+/* vim: set sw=2 ts=8 et tw=80 ft=cpp : */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_WindowGlobalChild_h
+#define mozilla_dom_WindowGlobalChild_h
+
+#include "mozilla/RefPtr.h"
+#include "mozilla/WeakPtr.h"
+#include "mozilla/dom/PWindowGlobalChild.h"
+#include "nsRefPtrHashtable.h"
+#include "nsWrapperCache.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/WindowGlobalActor.h"
+
+class nsGlobalWindowInner;
+class nsDocShell;
+
+namespace mozilla::dom {
+
+class BrowsingContext;
+class FeaturePolicy;
+class WindowContext;
+class WindowGlobalParent;
+class JSWindowActorChild;
+class JSActorMessageMeta;
+class BrowserChild;
+
+/**
+ * Actor for a single nsGlobalWindowInner. This actor is used to communicate
+ * information to the parent process asynchronously.
+ */
+class WindowGlobalChild final : public WindowGlobalActor,
+ public nsWrapperCache,
+ public PWindowGlobalChild,
+ public SupportsWeakPtr {
+ friend class PWindowGlobalChild;
+
+ public:
+ NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+ NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(WindowGlobalChild)
+
+ static already_AddRefed<WindowGlobalChild> GetByInnerWindowId(
+ uint64_t aInnerWindowId);
+
+ static already_AddRefed<WindowGlobalChild> GetByInnerWindowId(
+ const GlobalObject& aGlobal, uint64_t aInnerWindowId) {
+ return GetByInnerWindowId(aInnerWindowId);
+ }
+
+ dom::BrowsingContext* BrowsingContext() override;
+ dom::WindowContext* WindowContext() const { return mWindowContext; }
+ nsGlobalWindowInner* GetWindowGlobal() const { return mWindowGlobal; }
+
+ // Has this actor been shut down
+ bool IsClosed() { return !CanSend(); }
+ void Destroy();
+
+ // Check if this actor is managed by PInProcess, as-in the document is loaded
+ // in the chrome process.
+ bool IsInProcess() { return XRE_IsParentProcess(); }
+
+ nsIURI* GetDocumentURI() override { return mDocumentURI; }
+ void SetDocumentURI(nsIURI* aDocumentURI);
+ // See the corresponding comment for `UpdateDocumentPrincipal` in
+ // PWindowGlobal on why and when this is allowed
+ void SetDocumentPrincipal(nsIPrincipal* aNewDocumentPrincipal,
+ nsIPrincipal* aNewDocumentStoragePrincipal);
+
+ nsIPrincipal* DocumentPrincipal() { return mDocumentPrincipal; }
+
+ // The Window ID for this WindowGlobal
+ uint64_t InnerWindowId();
+ uint64_t OuterWindowId();
+
+ uint64_t ContentParentId();
+
+ int64_t BeforeUnloadListeners() { return mBeforeUnloadListeners; }
+ void BeforeUnloadAdded();
+ void BeforeUnloadRemoved();
+
+ bool IsCurrentGlobal();
+
+ bool IsProcessRoot();
+
+ // Get the other side of this actor if it is an in-process actor. Returns
+ // |nullptr| if the actor has been torn down, or is not in-process.
+ already_AddRefed<WindowGlobalParent> GetParentActor();
+
+ // Get this actor's manager if it is not an in-process actor. Returns
+ // |nullptr| if the actor has been torn down, or is in-process.
+ already_AddRefed<BrowserChild> GetBrowserChild();
+
+ // Get a JS actor object by name.
+ already_AddRefed<JSWindowActorChild> GetActor(JSContext* aCx,
+ const nsACString& aName,
+ ErrorResult& aRv);
+ already_AddRefed<JSWindowActorChild> GetExistingActor(
+ const nsACString& aName);
+
+ // Create and initialize the WindowGlobalChild object.
+ static already_AddRefed<WindowGlobalChild> Create(
+ nsGlobalWindowInner* aWindow);
+ static already_AddRefed<WindowGlobalChild> CreateDisconnected(
+ const WindowGlobalInit& aInit);
+
+ void Init();
+
+ void InitWindowGlobal(nsGlobalWindowInner* aWindow);
+
+ // Called when a new document is loaded in this WindowGlobalChild.
+ void OnNewDocument(Document* aNewDocument);
+
+ // Returns true if this WindowGlobal is same-origin with the given
+ // WindowContext. Out-of-process WindowContexts are supported, and are assumed
+ // to be cross-origin.
+ //
+ // The given WindowContext must be in the same BrowsingContextGroup as this
+ // window global.
+ bool IsSameOriginWith(const dom::WindowContext* aOther) const;
+
+ bool SameOriginWithTop();
+
+ // Returns `true` if this WindowGlobal is allowed to navigate the given
+ // BrowsingContext. BrowsingContexts which are currently out-of-process are
+ // supported, and assumed to be cross-origin.
+ //
+ // The given BrowsingContext must be in the same BrowsingContextGroup as this
+ // WindowGlobal.
+ bool CanNavigate(dom::BrowsingContext* aTarget, bool aConsiderOpener = true);
+
+ // Using the rules for choosing a browsing context we try to find
+ // the browsing context with the given name in the set of
+ // transitively reachable browsing contexts. Performs access control
+ // checks with regard to this.
+ // See
+ // https://html.spec.whatwg.org/multipage/browsers.html#the-rules-for-choosing-a-browsing-context-given-a-browsing-context-name.
+ dom::BrowsingContext* FindBrowsingContextWithName(
+ const nsAString& aName, bool aUseEntryGlobalForAccessCheck = true);
+
+ nsISupports* GetParentObject();
+ JSObject* WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) override;
+
+ dom::FeaturePolicy* GetContainerFeaturePolicy() const {
+ return mContainerFeaturePolicy;
+ }
+
+ void UnblockBFCacheFor(BFCacheStatus aStatus);
+ void BlockBFCacheFor(BFCacheStatus aStatus);
+
+ protected:
+ const nsACString& GetRemoteType() override;
+
+ already_AddRefed<JSActor> InitJSActor(JS::Handle<JSObject*> aMaybeActor,
+ const nsACString& aName,
+ ErrorResult& aRv) override;
+ mozilla::ipc::IProtocol* AsNativeActor() override { return this; }
+
+ // IPC messages
+ mozilla::ipc::IPCResult RecvRawMessage(
+ const JSActorMessageMeta& aMeta, const Maybe<ClonedMessageData>& aData,
+ const Maybe<ClonedMessageData>& aStack);
+
+ mozilla::ipc::IPCResult RecvMakeFrameLocal(
+ const MaybeDiscarded<dom::BrowsingContext>& aFrameContext,
+ uint64_t aPendingSwitchId);
+
+ mozilla::ipc::IPCResult RecvMakeFrameRemote(
+ const MaybeDiscarded<dom::BrowsingContext>& aFrameContext,
+ ManagedEndpoint<PBrowserBridgeChild>&& aEndpoint, const TabId& aTabId,
+ const LayersId& aLayersId, MakeFrameRemoteResolver&& aResolve);
+
+ mozilla::ipc::IPCResult RecvDrawSnapshot(const Maybe<IntRect>& aRect,
+ const float& aScale,
+ const nscolor& aBackgroundColor,
+ const uint32_t& aFlags,
+ DrawSnapshotResolver&& aResolve);
+
+ mozilla::ipc::IPCResult RecvDispatchSecurityPolicyViolation(
+ const nsString& aViolationEventJSON);
+
+ mozilla::ipc::IPCResult RecvSaveStorageAccessPermissionGranted();
+
+ mozilla::ipc::IPCResult RecvAddBlockedFrameNodeByClassifier(
+ const MaybeDiscardedBrowsingContext& aNode);
+
+ mozilla::ipc::IPCResult RecvResetScalingZoom();
+
+ mozilla::ipc::IPCResult RecvSetContainerFeaturePolicy(
+ dom::FeaturePolicy* aContainerFeaturePolicy);
+
+ mozilla::ipc::IPCResult RecvRestoreDocShellState(
+ const dom::sessionstore::DocShellRestoreState& aState,
+ RestoreDocShellStateResolver&& aResolve);
+
+ // TODO: Use MOZ_CAN_RUN_SCRIPT when it gains IPDL support (bug 1539864)
+ MOZ_CAN_RUN_SCRIPT_BOUNDARY mozilla::ipc::IPCResult RecvRestoreTabContent(
+ dom::SessionStoreRestoreData* aData,
+ RestoreTabContentResolver&& aResolve);
+
+ mozilla::ipc::IPCResult RecvNotifyPermissionChange(const nsCString& aType,
+ uint32_t aPermission);
+
+ virtual void ActorDestroy(ActorDestroyReason aWhy) override;
+
+ private:
+ WindowGlobalChild(dom::WindowContext* aWindowContext,
+ nsIPrincipal* aPrincipal, nsIURI* aURI);
+
+ ~WindowGlobalChild();
+
+ RefPtr<nsGlobalWindowInner> mWindowGlobal;
+ RefPtr<dom::WindowContext> mWindowContext;
+ nsCOMPtr<nsIPrincipal> mDocumentPrincipal;
+ RefPtr<dom::FeaturePolicy> mContainerFeaturePolicy;
+ nsCOMPtr<nsIURI> mDocumentURI;
+ int64_t mBeforeUnloadListeners = 0;
+};
+
+} // namespace mozilla::dom
+
+#endif // !defined(mozilla_dom_WindowGlobalChild_h)