diff -r 000000000000 -r 6474c204b198 widget/windows/winrt/MetroApp.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widget/windows/winrt/MetroApp.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,62 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#pragma once
+
+#include "mozwrlbase.h"
+
+#include <windows.system.h>
+#include <windows.ui.core.h>
+#include <Windows.ApplicationModel.core.h>
+#include <Windows.ApplicationModel.h>
+#include <Windows.Applicationmodel.Activation.h>
+
+class MetroWidget;
+
+namespace mozilla {
+namespace widget {
+namespace winrt {
+
+class MetroApp : public Microsoft::WRL::RuntimeClass<ABI::Windows::ApplicationModel::Core::IFrameworkViewSource>
+{
+  InspectableClass(L"MetroApp", TrustLevel::BaseTrust)
+
+  typedef ABI::Windows::UI::Core::CoreDispatcherPriority CoreDispatcherPriority;
+  typedef ABI::Windows::ApplicationModel::Activation::LaunchActivatedEventArgs LaunchActivatedEventArgs;
+  typedef ABI::Windows::ApplicationModel::ISuspendingEventArgs ISuspendingEventArgs;
+  typedef ABI::Windows::ApplicationModel::Core::IFrameworkView IFrameworkView;
+  typedef ABI::Windows::ApplicationModel::Core::ICoreApplication ICoreApplication;
+
+public:
+  // IFrameworkViewSource
+  STDMETHODIMP CreateView(IFrameworkView **viewProvider);
+
+  // ICoreApplication event
+  HRESULT OnSuspending(IInspectable* aSender, ISuspendingEventArgs* aArgs);
+  HRESULT OnResuming(IInspectable* aSender, IInspectable* aArgs);
+
+  // nsIWinMetroUtils tile related async callbacks
+  HRESULT OnAsyncTileCreated(ABI::Windows::Foundation::IAsyncOperation<bool>* aOperation, AsyncStatus aStatus);
+
+  void Run();
+  void CoreExit();
+  void Shutdown();
+  void ActivateBaseView();
+
+  // Set when gecko enters xpcom shutdown.
+  static bool sGeckoShuttingDown;
+
+  // Shared pointers between framework and widget
+  void SetWidget(MetroWidget* aPtr);
+
+  static void PostSuspendResumeProcessNotification(bool aIsSuspend);
+  static void PostSleepWakeNotification(bool aIsSuspend);
+
+private:
+  EventRegistrationToken mSuspendEvent;
+  EventRegistrationToken mResumeEvent;
+};
+
+} } }