Add m-esr52 at 52.6.0

1 files changed, 858 insertions, 0 deletions

diff --git a/dom/base/nsContentPermissionHelper.cpp b/dom/base/nsContentPermissionHelper.cpp
new file mode 100644
index 000000000..fd04b1013
--- /dev/null
+++ b/dom/base/nsContentPermissionHelper.cpp
@@ -0,0 +1,858 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include <map>
+#ifdef MOZ_WIDGET_GONK
+#include "GonkPermission.h"
+#endif // MOZ_WIDGET_GONK
+#include "nsCOMPtr.h"
+#include "nsIDOMElement.h"
+#include "nsIPrincipal.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/PContentPermission.h"
+#include "mozilla/dom/PermissionMessageUtils.h"
+#include "mozilla/dom/PContentPermissionRequestParent.h"
+#include "mozilla/dom/ScriptSettings.h"
+#include "mozilla/dom/TabChild.h"
+#include "mozilla/dom/TabParent.h"
+#include "mozilla/Unused.h"
+#include "nsComponentManagerUtils.h"
+#include "nsArrayUtils.h"
+#include "nsIMutableArray.h"
+#include "nsContentPermissionHelper.h"
+#include "nsJSUtils.h"
+#include "nsISupportsPrimitives.h"
+#include "nsServiceManagerUtils.h"
+#include "nsIDocument.h"
+#include "nsIDOMEvent.h"
+#include "nsWeakPtr.h"
+#include "ScriptSettings.h"
+
+using mozilla::Unused;          // <snicker>
+using namespace mozilla::dom;
+using namespace mozilla;
+
+#define kVisibilityChange "visibilitychange"
+
+class VisibilityChangeListener final : public nsIDOMEventListener
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIDOMEVENTLISTENER
+
+  explicit VisibilityChangeListener(nsPIDOMWindowInner* aWindow);
+
+  void RemoveListener();
+  void SetCallback(nsIContentPermissionRequestCallback* aCallback);
+  already_AddRefed<nsIContentPermissionRequestCallback> GetCallback();
+
+private:
+  virtual ~VisibilityChangeListener() {}
+
+  nsWeakPtr mWindow;
+  nsCOMPtr<nsIContentPermissionRequestCallback> mCallback;
+};
+
+NS_IMPL_ISUPPORTS(VisibilityChangeListener, nsIDOMEventListener)
+
+VisibilityChangeListener::VisibilityChangeListener(nsPIDOMWindowInner* aWindow)
+{
+  MOZ_ASSERT(aWindow);
+
+  mWindow = do_GetWeakReference(aWindow);
+  nsCOMPtr<nsIDocument> doc = aWindow->GetExtantDoc();
+  if (doc) {
+    doc->AddSystemEventListener(NS_LITERAL_STRING(kVisibilityChange),
+                                /* listener */ this,
+                                /* use capture */ true,
+                                /* wants untrusted */ false);
+  }
+
+}
+
+NS_IMETHODIMP
+VisibilityChangeListener::HandleEvent(nsIDOMEvent* aEvent)
+{
+  nsAutoString type;
+  aEvent->GetType(type);
+  if (!type.EqualsLiteral(kVisibilityChange)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIDocument> doc =
+    do_QueryInterface(aEvent->InternalDOMEvent()->GetTarget());
+  MOZ_ASSERT(doc);
+
+  if (mCallback) {
+    mCallback->NotifyVisibility(!doc->Hidden());
+  }
+
+  return NS_OK;
+}
+
+void
+VisibilityChangeListener::RemoveListener()
+{
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mWindow);
+  if (!window) {
+    return;
+  }
+
+  nsCOMPtr<EventTarget> target = do_QueryInterface(window->GetExtantDoc());
+  if (target) {
+    target->RemoveSystemEventListener(NS_LITERAL_STRING(kVisibilityChange),
+                                      /* listener */ this,
+                                      /* use capture */ true);
+  }
+}
+
+void
+VisibilityChangeListener::SetCallback(nsIContentPermissionRequestCallback *aCallback)
+{
+  mCallback = aCallback;
+}
+
+already_AddRefed<nsIContentPermissionRequestCallback>
+VisibilityChangeListener::GetCallback()
+{
+  nsCOMPtr<nsIContentPermissionRequestCallback> callback = mCallback;
+  return callback.forget();
+}
+
+namespace mozilla {
+namespace dom {
+
+class ContentPermissionRequestParent : public PContentPermissionRequestParent
+{
+ public:
+  ContentPermissionRequestParent(const nsTArray<PermissionRequest>& aRequests,
+                                 Element* element,
+                                 const IPC::Principal& principal);
+  virtual ~ContentPermissionRequestParent();
+
+  bool IsBeingDestroyed();
+
+  nsCOMPtr<nsIPrincipal> mPrincipal;
+  nsCOMPtr<Element> mElement;
+  RefPtr<nsContentPermissionRequestProxy> mProxy;
+  nsTArray<PermissionRequest> mRequests;
+
+ private:
+  virtual bool Recvprompt();
+  virtual bool RecvNotifyVisibility(const bool& aIsVisible);
+  virtual bool RecvDestroy();
+  virtual void ActorDestroy(ActorDestroyReason why);
+};
+
+ContentPermissionRequestParent::ContentPermissionRequestParent(const nsTArray<PermissionRequest>& aRequests,
+                                                               Element* aElement,
+                                                               const IPC::Principal& aPrincipal)
+{
+  MOZ_COUNT_CTOR(ContentPermissionRequestParent);
+
+  mPrincipal = aPrincipal;
+  mElement   = aElement;
+  mRequests  = aRequests;
+}
+
+ContentPermissionRequestParent::~ContentPermissionRequestParent()
+{
+  MOZ_COUNT_DTOR(ContentPermissionRequestParent);
+}
+
+bool
+ContentPermissionRequestParent::Recvprompt()
+{
+  mProxy = new nsContentPermissionRequestProxy();
+  if (NS_FAILED(mProxy->Init(mRequests, this))) {
+    mProxy->Cancel();
+  }
+  return true;
+}
+
+bool
+ContentPermissionRequestParent::RecvNotifyVisibility(const bool& aIsVisible)
+{
+  if (!mProxy) {
+    return false;
+  }
+  mProxy->NotifyVisibility(aIsVisible);
+  return true;
+}
+
+bool
+ContentPermissionRequestParent::RecvDestroy()
+{
+  Unused << PContentPermissionRequestParent::Send__delete__(this);
+  return true;
+}
+
+void
+ContentPermissionRequestParent::ActorDestroy(ActorDestroyReason why)
+{
+  if (mProxy) {
+    mProxy->OnParentDestroyed();
+  }
+}
+
+bool
+ContentPermissionRequestParent::IsBeingDestroyed()
+{
+  // When ContentParent::MarkAsDead() is called, we are being destroyed.
+  // It's unsafe to send out any message now.
+  ContentParent* contentParent = static_cast<ContentParent*>(Manager());
+  return !contentParent->IsAlive();
+}
+
+NS_IMPL_ISUPPORTS(ContentPermissionType, nsIContentPermissionType)
+
+ContentPermissionType::ContentPermissionType(const nsACString& aType,
+                                             const nsACString& aAccess,
+                                             const nsTArray<nsString>& aOptions)
+{
+  mType = aType;
+  mAccess = aAccess;
+  mOptions = aOptions;
+}
+
+ContentPermissionType::~ContentPermissionType()
+{
+}
+
+NS_IMETHODIMP
+ContentPermissionType::GetType(nsACString& aType)
+{
+  aType = mType;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ContentPermissionType::GetAccess(nsACString& aAccess)
+{
+  aAccess = mAccess;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ContentPermissionType::GetOptions(nsIArray** aOptions)
+{
+  NS_ENSURE_ARG_POINTER(aOptions);
+
+  *aOptions = nullptr;
+
+  nsresult rv;
+  nsCOMPtr<nsIMutableArray> options =
+    do_CreateInstance(NS_ARRAY_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // copy options into JS array
+  for (uint32_t i = 0; i < mOptions.Length(); ++i) {
+    nsCOMPtr<nsISupportsString> isupportsString =
+      do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = isupportsString->SetData(mOptions[i]);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = options->AppendElement(isupportsString, false);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  options.forget(aOptions);
+  return NS_OK;
+}
+
+// nsContentPermissionUtils
+
+/* static */ uint32_t
+nsContentPermissionUtils::ConvertPermissionRequestToArray(nsTArray<PermissionRequest>& aSrcArray,
+                                                          nsIMutableArray* aDesArray)
+{
+  uint32_t len = aSrcArray.Length();
+  for (uint32_t i = 0; i < len; i++) {
+    RefPtr<ContentPermissionType> cpt =
+      new ContentPermissionType(aSrcArray[i].type(),
+                                aSrcArray[i].access(),
+                                aSrcArray[i].options());
+    aDesArray->AppendElement(cpt, false);
+  }
+  return len;
+}
+
+/* static */ uint32_t
+nsContentPermissionUtils::ConvertArrayToPermissionRequest(nsIArray* aSrcArray,
+                                                          nsTArray<PermissionRequest>& aDesArray)
+{
+  uint32_t len = 0;
+  aSrcArray->GetLength(&len);
+  for (uint32_t i = 0; i < len; i++) {
+    nsCOMPtr<nsIContentPermissionType> cpt = do_QueryElementAt(aSrcArray, i);
+    nsAutoCString type;
+    nsAutoCString access;
+    cpt->GetType(type);
+    cpt->GetAccess(access);
+
+    nsCOMPtr<nsIArray> optionArray;
+    cpt->GetOptions(getter_AddRefs(optionArray));
+    uint32_t optionsLength = 0;
+    if (optionArray) {
+      optionArray->GetLength(&optionsLength);
+    }
+    nsTArray<nsString> options;
+    for (uint32_t j = 0; j < optionsLength; ++j) {
+      nsCOMPtr<nsISupportsString> isupportsString = do_QueryElementAt(optionArray, j);
+      if (isupportsString) {
+        nsString option;
+        isupportsString->GetData(option);
+        options.AppendElement(option);
+      }
+    }
+
+    aDesArray.AppendElement(PermissionRequest(type, access, options));
+  }
+  return len;
+}
+
+static std::map<PContentPermissionRequestParent*, TabId>&
+ContentPermissionRequestParentMap()
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  static std::map<PContentPermissionRequestParent*, TabId> sPermissionRequestParentMap;
+  return sPermissionRequestParentMap;
+}
+
+static std::map<PContentPermissionRequestChild*, TabId>&
+ContentPermissionRequestChildMap()
+{
+  MOZ_ASSERT(NS_IsMainThread());
+  static std::map<PContentPermissionRequestChild*, TabId> sPermissionRequestChildMap;
+  return sPermissionRequestChildMap;
+}
+
+/* static */ nsresult
+nsContentPermissionUtils::CreatePermissionArray(const nsACString& aType,
+                                                const nsACString& aAccess,
+                                                const nsTArray<nsString>& aOptions,
+                                                nsIArray** aTypesArray)
+{
+  nsCOMPtr<nsIMutableArray> types = do_CreateInstance(NS_ARRAY_CONTRACTID);
+  RefPtr<ContentPermissionType> permType = new ContentPermissionType(aType,
+                                                                       aAccess,
+                                                                       aOptions);
+  types->AppendElement(permType, false);
+  types.forget(aTypesArray);
+
+  return NS_OK;
+}
+
+/* static */ PContentPermissionRequestParent*
+nsContentPermissionUtils::CreateContentPermissionRequestParent(const nsTArray<PermissionRequest>& aRequests,
+                                                               Element* element,
+                                                               const IPC::Principal& principal,
+                                                               const TabId& aTabId)
+{
+  PContentPermissionRequestParent* parent =
+    new ContentPermissionRequestParent(aRequests, element, principal);
+  ContentPermissionRequestParentMap()[parent] = aTabId;
+
+  return parent;
+}
+
+/* static */ nsresult
+nsContentPermissionUtils::AskPermission(nsIContentPermissionRequest* aRequest,
+                                        nsPIDOMWindowInner* aWindow)
+{
+  MOZ_ASSERT(!aWindow || aWindow->IsInnerWindow());
+  NS_ENSURE_STATE(aWindow && aWindow->IsCurrentInnerWindow());
+
+  // for content process
+  if (XRE_IsContentProcess()) {
+
+    RefPtr<RemotePermissionRequest> req =
+      new RemotePermissionRequest(aRequest, aWindow);
+
+    MOZ_ASSERT(NS_IsMainThread()); // IPC can only be execute on main thread.
+
+    TabChild* child = TabChild::GetFrom(aWindow->GetDocShell());
+    NS_ENSURE_TRUE(child, NS_ERROR_FAILURE);
+
+    nsCOMPtr<nsIArray> typeArray;
+    nsresult rv = aRequest->GetTypes(getter_AddRefs(typeArray));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsTArray<PermissionRequest> permArray;
+    ConvertArrayToPermissionRequest(typeArray, permArray);
+
+    nsCOMPtr<nsIPrincipal> principal;
+    rv = aRequest->GetPrincipal(getter_AddRefs(principal));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    req->IPDLAddRef();
+    ContentChild::GetSingleton()->SendPContentPermissionRequestConstructor(
+      req,
+      permArray,
+      IPC::Principal(principal),
+      child->GetTabId());
+    ContentPermissionRequestChildMap()[req.get()] = child->GetTabId();
+
+    req->Sendprompt();
+    return NS_OK;
+  }
+
+  // for chrome process
+  nsCOMPtr<nsIContentPermissionPrompt> prompt =
+    do_GetService(NS_CONTENT_PERMISSION_PROMPT_CONTRACTID);
+  if (prompt) {
+    if (NS_FAILED(prompt->Prompt(aRequest))) {
+      return NS_ERROR_FAILURE;
+    }
+  }
+  return NS_OK;
+}
+
+/* static */ nsTArray<PContentPermissionRequestParent*>
+nsContentPermissionUtils::GetContentPermissionRequestParentById(const TabId& aTabId)
+{
+  nsTArray<PContentPermissionRequestParent*> parentArray;
+  for (auto& it : ContentPermissionRequestParentMap()) {
+    if (it.second == aTabId) {
+      parentArray.AppendElement(it.first);
+    }
+  }
+
+  return Move(parentArray);
+}
+
+/* static */ void
+nsContentPermissionUtils::NotifyRemoveContentPermissionRequestParent(
+  PContentPermissionRequestParent* aParent)
+{
+  auto it = ContentPermissionRequestParentMap().find(aParent);
+  MOZ_ASSERT(it != ContentPermissionRequestParentMap().end());
+
+  ContentPermissionRequestParentMap().erase(it);
+}
+
+/* static */ nsTArray<PContentPermissionRequestChild*>
+nsContentPermissionUtils::GetContentPermissionRequestChildById(const TabId& aTabId)
+{
+  nsTArray<PContentPermissionRequestChild*> childArray;
+  for (auto& it : ContentPermissionRequestChildMap()) {
+    if (it.second == aTabId) {
+      childArray.AppendElement(it.first);
+    }
+  }
+
+  return Move(childArray);
+}
+
+/* static */ void
+nsContentPermissionUtils::NotifyRemoveContentPermissionRequestChild(
+  PContentPermissionRequestChild* aChild)
+{
+  auto it = ContentPermissionRequestChildMap().find(aChild);
+  MOZ_ASSERT(it != ContentPermissionRequestChildMap().end());
+
+  ContentPermissionRequestChildMap().erase(it);
+}
+
+NS_IMPL_ISUPPORTS(nsContentPermissionRequester, nsIContentPermissionRequester)
+
+nsContentPermissionRequester::nsContentPermissionRequester(nsPIDOMWindowInner* aWindow)
+  : mWindow(do_GetWeakReference(aWindow))
+  , mListener(new VisibilityChangeListener(aWindow))
+{
+}
+
+nsContentPermissionRequester::~nsContentPermissionRequester()
+{
+  mListener->RemoveListener();
+  mListener = nullptr;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequester::GetVisibility(nsIContentPermissionRequestCallback* aCallback)
+{
+  NS_ENSURE_ARG_POINTER(aCallback);
+
+  nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mWindow);
+  if (!window) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIDocShell> docshell = window->GetDocShell();
+  if (!docshell) {
+    return NS_ERROR_FAILURE;
+  }
+
+  bool isActive = false;
+  docshell->GetIsActive(&isActive);
+  aCallback->NotifyVisibility(isActive);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequester::SetOnVisibilityChange(nsIContentPermissionRequestCallback* aCallback)
+{
+  mListener->SetCallback(aCallback);
+
+  if (!aCallback) {
+    mListener->RemoveListener();
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequester::GetOnVisibilityChange(nsIContentPermissionRequestCallback** aCallback)
+{
+  NS_ENSURE_ARG_POINTER(aCallback);
+
+  nsCOMPtr<nsIContentPermissionRequestCallback> callback = mListener->GetCallback();
+  callback.forget(aCallback);
+  return NS_OK;
+}
+
+} // namespace dom
+} // namespace mozilla
+
+NS_IMPL_ISUPPORTS(nsContentPermissionRequestProxy::nsContentPermissionRequesterProxy,
+                  nsIContentPermissionRequester)
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::nsContentPermissionRequesterProxy
+  ::GetVisibility(nsIContentPermissionRequestCallback* aCallback)
+{
+  NS_ENSURE_ARG_POINTER(aCallback);
+
+  mGetCallback = aCallback;
+  mWaitGettingResult = true;
+  Unused << mParent->SendGetVisibility();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::nsContentPermissionRequesterProxy
+  ::SetOnVisibilityChange(nsIContentPermissionRequestCallback* aCallback)
+{
+  mOnChangeCallback = aCallback;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::nsContentPermissionRequesterProxy
+  ::GetOnVisibilityChange(nsIContentPermissionRequestCallback** aCallback)
+{
+  NS_ENSURE_ARG_POINTER(aCallback);
+
+  nsCOMPtr<nsIContentPermissionRequestCallback> callback = mOnChangeCallback;
+  callback.forget(aCallback);
+  return NS_OK;
+}
+
+void
+nsContentPermissionRequestProxy::nsContentPermissionRequesterProxy
+  ::NotifyVisibilityResult(const bool& aIsVisible)
+{
+  if (mWaitGettingResult) {
+    MOZ_ASSERT(mGetCallback);
+    mWaitGettingResult = false;
+    mGetCallback->NotifyVisibility(aIsVisible);
+    return;
+  }
+
+  if (mOnChangeCallback) {
+    mOnChangeCallback->NotifyVisibility(aIsVisible);
+  }
+}
+
+nsContentPermissionRequestProxy::nsContentPermissionRequestProxy()
+{
+  MOZ_COUNT_CTOR(nsContentPermissionRequestProxy);
+}
+
+nsContentPermissionRequestProxy::~nsContentPermissionRequestProxy()
+{
+  MOZ_COUNT_DTOR(nsContentPermissionRequestProxy);
+}
+
+nsresult
+nsContentPermissionRequestProxy::Init(const nsTArray<PermissionRequest>& requests,
+                                      ContentPermissionRequestParent* parent)
+{
+  NS_ASSERTION(parent, "null parent");
+  mParent = parent;
+  mPermissionRequests = requests;
+  mRequester = new nsContentPermissionRequesterProxy(mParent);
+
+  nsCOMPtr<nsIContentPermissionPrompt> prompt = do_GetService(NS_CONTENT_PERMISSION_PROMPT_CONTRACTID);
+  if (!prompt) {
+    return NS_ERROR_FAILURE;
+  }
+
+  prompt->Prompt(this);
+  return NS_OK;
+}
+
+void
+nsContentPermissionRequestProxy::OnParentDestroyed()
+{
+  mRequester = nullptr;
+  mParent = nullptr;
+}
+
+NS_IMPL_ISUPPORTS(nsContentPermissionRequestProxy, nsIContentPermissionRequest)
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::GetTypes(nsIArray** aTypes)
+{
+  nsCOMPtr<nsIMutableArray> types = do_CreateInstance(NS_ARRAY_CONTRACTID);
+  if (mozilla::dom::nsContentPermissionUtils::ConvertPermissionRequestToArray(mPermissionRequests, types)) {
+    types.forget(aTypes);
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::GetWindow(mozIDOMWindow * *aRequestingWindow)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingWindow);
+  *aRequestingWindow = nullptr; // ipc doesn't have a window
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::GetPrincipal(nsIPrincipal * *aRequestingPrincipal)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingPrincipal);
+  if (mParent == nullptr) {
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_ADDREF(*aRequestingPrincipal = mParent->mPrincipal);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::GetElement(nsIDOMElement * *aRequestingElement)
+{
+  NS_ENSURE_ARG_POINTER(aRequestingElement);
+  if (mParent == nullptr) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(mParent->mElement);
+  elem.forget(aRequestingElement);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::Cancel()
+{
+  if (mParent == nullptr) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Don't send out the delete message when the managing protocol (PBrowser) is
+  // being destroyed and PContentPermissionRequest will soon be.
+  if (mParent->IsBeingDestroyed()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsTArray<PermissionChoice> emptyChoices;
+
+  Unused << mParent->SendNotifyResult(false, emptyChoices);
+  mParent = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::Allow(JS::HandleValue aChoices)
+{
+  if (mParent == nullptr) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Don't send out the delete message when the managing protocol (PBrowser) is
+  // being destroyed and PContentPermissionRequest will soon be.
+  if (mParent->IsBeingDestroyed()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsTArray<PermissionChoice> choices;
+  if (aChoices.isNullOrUndefined()) {
+    // No choice is specified.
+  } else if (aChoices.isObject()) {
+    // Iterate through all permission types.
+    for (uint32_t i = 0; i < mPermissionRequests.Length(); ++i) {
+      nsCString type = mPermissionRequests[i].type();
+
+      AutoJSAPI jsapi;
+      jsapi.Init();
+
+      JSContext* cx = jsapi.cx();
+      JS::Rooted<JSObject*> obj(cx, &aChoices.toObject());
+      JSAutoCompartment ac(cx, obj);
+
+      JS::Rooted<JS::Value> val(cx);
+
+      if (!JS_GetProperty(cx, obj, type.BeginReading(), &val) ||
+          !val.isString()) {
+        // no setting for the permission type, clear exception and skip it
+        jsapi.ClearException();
+      } else {
+        nsAutoJSString choice;
+        if (!choice.init(cx, val)) {
+          jsapi.ClearException();
+          return NS_ERROR_FAILURE;
+        }
+        choices.AppendElement(PermissionChoice(type, choice));
+      }
+    }
+  } else {
+    MOZ_ASSERT(false, "SelectedChoices should be undefined or an JS object");
+    return NS_ERROR_FAILURE;
+  }
+
+  Unused << mParent->SendNotifyResult(true, choices);
+  mParent = nullptr;
+  return NS_OK;
+}
+
+void
+nsContentPermissionRequestProxy::NotifyVisibility(const bool& aIsVisible)
+{
+  MOZ_ASSERT(mRequester);
+
+  mRequester->NotifyVisibilityResult(aIsVisible);
+}
+
+NS_IMETHODIMP
+nsContentPermissionRequestProxy::GetRequester(nsIContentPermissionRequester** aRequester)
+{
+  NS_ENSURE_ARG_POINTER(aRequester);
+
+  RefPtr<nsContentPermissionRequesterProxy> requester = mRequester;
+  requester.forget(aRequester);
+  return NS_OK;
+}
+
+// RemotePermissionRequest
+
+NS_IMPL_ISUPPORTS(RemotePermissionRequest, nsIContentPermissionRequestCallback);
+
+RemotePermissionRequest::RemotePermissionRequest(
+  nsIContentPermissionRequest* aRequest,
+  nsPIDOMWindowInner* aWindow)
+  : mRequest(aRequest)
+  , mWindow(aWindow)
+  , mIPCOpen(false)
+  , mDestroyed(false)
+{
+  mListener = new VisibilityChangeListener(mWindow);
+  mListener->SetCallback(this);
+}
+
+RemotePermissionRequest::~RemotePermissionRequest()
+{
+  MOZ_ASSERT(!mIPCOpen, "Protocol must not be open when RemotePermissionRequest is destroyed.");
+}
+
+void
+RemotePermissionRequest::DoCancel()
+{
+  NS_ASSERTION(mRequest, "We need a request");
+  mRequest->Cancel();
+}
+
+void
+RemotePermissionRequest::DoAllow(JS::HandleValue aChoices)
+{
+  NS_ASSERTION(mRequest, "We need a request");
+  mRequest->Allow(aChoices);
+}
+
+// PContentPermissionRequestChild
+bool
+RemotePermissionRequest::RecvNotifyResult(const bool& aAllow,
+                                          InfallibleTArray<PermissionChoice>&& aChoices)
+{
+  Destroy();
+
+  if (aAllow && mWindow->IsCurrentInnerWindow()) {
+    // Use 'undefined' if no choice is provided.
+    if (aChoices.IsEmpty()) {
+      DoAllow(JS::UndefinedHandleValue);
+      return true;
+    }
+
+    // Convert choices to a JS val if any.
+    // {"type1": "choice1", "type2": "choiceA"}
+    AutoJSAPI jsapi;
+    if (NS_WARN_IF(!jsapi.Init(mWindow))) {
+      return true; // This is not an IPC error.
+    }
+
+    JSContext* cx = jsapi.cx();
+    JS::Rooted<JSObject*> obj(cx);
+    obj = JS_NewPlainObject(cx);
+    for (uint32_t i = 0; i < aChoices.Length(); ++i) {
+      const nsString& choice = aChoices[i].choice();
+      const nsCString& type = aChoices[i].type();
+      JS::Rooted<JSString*> jChoice(cx, JS_NewUCStringCopyN(cx, choice.get(), choice.Length()));
+      JS::Rooted<JS::Value> vChoice(cx, StringValue(jChoice));
+      if (!JS_SetProperty(cx, obj, type.get(), vChoice)) {
+        return false;
+      }
+    }
+    JS::RootedValue val(cx, JS::ObjectValue(*obj));
+    DoAllow(val);
+  } else {
+    DoCancel();
+  }
+  return true;
+}
+
+bool
+RemotePermissionRequest::RecvGetVisibility()
+{
+  nsCOMPtr<nsIDocShell> docshell = mWindow->GetDocShell();
+  if (!docshell) {
+    return false;
+  }
+
+  bool isActive = false;
+  docshell->GetIsActive(&isActive);
+  Unused << SendNotifyVisibility(isActive);
+  return true;
+}
+
+void
+RemotePermissionRequest::Destroy()
+{
+  if (!IPCOpen()) {
+    return;
+  }
+  Unused << this->SendDestroy();
+  mListener->RemoveListener();
+  mListener = nullptr;
+  mDestroyed = true;
+}
+
+NS_IMETHODIMP
+RemotePermissionRequest::NotifyVisibility(bool isVisible)
+{
+  if (!IPCOpen()) {
+    return NS_OK;
+  }
+
+  Unused << SendNotifyVisibility(isVisible);
+  return NS_OK;
+}