--- a/widget/windows/WindowsUIUtils.cpp
+++ b/widget/windows/WindowsUIUtils.cpp
@@ -1,174 +1,174 @@
-/* -*- Mode: C++; tab-width: 2; 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/. */
-
-#include <windows.h>
-#include "mozwrlbase.h"
-#include "nsServiceManagerUtils.h"
-
-#include "WindowsUIUtils.h"
-
-#include "nsIObserverService.h"
-#include "nsIBaseWindow.h"
+/* -*- Mode: C++; tab-width: 2; 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/. */
+
+#include <windows.h>
+#include "mozwrlbase.h"
+#include "nsServiceManagerUtils.h"
+
+#include "WindowsUIUtils.h"
+
+#include "nsIObserverService.h"
+#include "nsIBaseWindow.h"
 #include "nsIDocShell.h"
-#include "nsIAppShellService.h"
-#include "nsAppShellCID.h"
-#include "nsIXULWindow.h"
-#include "mozilla/Services.h"
-#include "mozilla/WindowsVersion.h"
-#include "nsString.h"
-#include "nsIWidget.h"
-
-#include <windows.ui.viewmanagement.h>
-
-#pragma comment(lib, "runtimeobject.lib")
-
-using namespace mozilla;
-using namespace ABI::Windows::UI;
-using namespace ABI::Windows::UI::ViewManagement;
-using namespace Microsoft::WRL;
-using namespace Microsoft::WRL::Wrappers;
-using namespace ABI::Windows::Foundation;
-
-/* All of this is win10 stuff and we're compiling against win81 headers
- * for now, so we may need to do some legwork: */
+#include "nsIAppShellService.h"
+#include "nsAppShellCID.h"
+#include "nsIXULWindow.h"
+#include "mozilla/Services.h"
+#include "mozilla/WindowsVersion.h"
+#include "nsString.h"
+#include "nsIWidget.h"
+
+#include <windows.ui.viewmanagement.h>
+
+#pragma comment(lib, "runtimeobject.lib")
+
+using namespace mozilla;
+using namespace ABI::Windows::UI;
+using namespace ABI::Windows::UI::ViewManagement;
+using namespace Microsoft::WRL;
+using namespace Microsoft::WRL::Wrappers;
+using namespace ABI::Windows::Foundation;
+
+/* All of this is win10 stuff and we're compiling against win81 headers
+ * for now, so we may need to do some legwork: */
 #if MOZ_WINSDK_MAXVER < 0x0A000000
-namespace ABI {
-  namespace Windows {
-    namespace UI {
-      namespace ViewManagement {
-        enum UserInteractionMode {
-          UserInteractionMode_Mouse = 0,
-          UserInteractionMode_Touch = 1
-        };
-      }
-    }
-  }
-}
-
-#endif
-
-#ifndef RuntimeClass_Windows_UI_ViewManagement_UIViewSettings
-#define RuntimeClass_Windows_UI_ViewManagement_UIViewSettings L"Windows.UI.ViewManagement.UIViewSettings"
-#endif
-
+namespace ABI {
+  namespace Windows {
+    namespace UI {
+      namespace ViewManagement {
+        enum UserInteractionMode {
+          UserInteractionMode_Mouse = 0,
+          UserInteractionMode_Touch = 1
+        };
+      }
+    }
+  }
+}
+
+#endif
+
+#ifndef RuntimeClass_Windows_UI_ViewManagement_UIViewSettings
+#define RuntimeClass_Windows_UI_ViewManagement_UIViewSettings L"Windows.UI.ViewManagement.UIViewSettings"
+#endif
+
 #if MOZ_WINSDK_MAXVER < 0x0A000000
-namespace ABI {
-  namespace Windows {
-    namespace UI {
-      namespace ViewManagement {
-        interface IUIViewSettings;
-        MIDL_INTERFACE("C63657F6-8850-470D-88F8-455E16EA2C26")
-          IUIViewSettings : public IInspectable
-          {
-            public:
-              virtual HRESULT STDMETHODCALLTYPE get_UserInteractionMode(UserInteractionMode *value) = 0;
-          };
-
-        extern const __declspec(selectany) IID & IID_IUIViewSettings = __uuidof(IUIViewSettings);
-      }
-    }
-  }
-}
-#endif
-
-#ifndef IUIViewSettingsInterop
-
-typedef interface IUIViewSettingsInterop IUIViewSettingsInterop;
-
-MIDL_INTERFACE("3694dbf9-8f68-44be-8ff5-195c98ede8a6")
-IUIViewSettingsInterop : public IInspectable
-{
-public:
-  virtual HRESULT STDMETHODCALLTYPE GetForWindow(HWND hwnd, REFIID riid, void **ppv) = 0;
-};
-#endif
-
-WindowsUIUtils::WindowsUIUtils() :
-  mInTabletMode(eTabletModeUnknown)
-{
-}
-
-WindowsUIUtils::~WindowsUIUtils()
-{
-}
-
-/*
- * Implement the nsISupports methods...
- */
-NS_IMPL_ISUPPORTS(WindowsUIUtils,
-                  nsIWindowsUIUtils)
-
-NS_IMETHODIMP
-WindowsUIUtils::GetInTabletMode(bool* aResult)
-{
-  if (mInTabletMode == eTabletModeUnknown) {
-    UpdateTabletModeState();
-  }
-  *aResult = mInTabletMode == eTabletModeOn;
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-WindowsUIUtils::UpdateTabletModeState()
-{
-  if (!IsWin10OrLater()) {
-    return NS_OK;
-  }
-
-  nsCOMPtr<nsIAppShellService> appShell(do_GetService(NS_APPSHELLSERVICE_CONTRACTID));
-  nsCOMPtr<nsIXULWindow> hiddenWindow;
-
-  nsresult rv = appShell->GetHiddenWindow(getter_AddRefs(hiddenWindow));
-  if (NS_FAILED(rv)) {
-    return rv;
-  }
-
-  nsCOMPtr<nsIDocShell> docShell;
-  rv = hiddenWindow->GetDocShell(getter_AddRefs(docShell));
-  if (NS_FAILED(rv) || !docShell) {
-    return rv;
-  }
-
-  nsCOMPtr<nsIBaseWindow> baseWindow(do_QueryInterface(docShell));
-
-  if (!baseWindow)
-    return NS_ERROR_FAILURE;
-
-  nsCOMPtr<nsIWidget> widget;
-  baseWindow->GetMainWidget(getter_AddRefs(widget));
-
-  if (!widget)
-    return NS_ERROR_FAILURE;
-
-  HWND winPtr = (HWND)widget->GetNativeData(NS_NATIVE_WINDOW);
-  ComPtr<IUIViewSettingsInterop> uiViewSettingsInterop;
-
-  HRESULT hr = GetActivationFactory(
-      HStringReference(RuntimeClass_Windows_UI_ViewManagement_UIViewSettings).Get(),
-      &uiViewSettingsInterop);
-  if (SUCCEEDED(hr)) {
-    ComPtr<IUIViewSettings> uiViewSettings;
-    hr = uiViewSettingsInterop->GetForWindow(winPtr, IID_PPV_ARGS(&uiViewSettings));
-    if (SUCCEEDED(hr)) {
-      UserInteractionMode mode;
-      hr = uiViewSettings->get_UserInteractionMode(&mode);
-      if (SUCCEEDED(hr)) {
-        TabletModeState oldTabletModeState = mInTabletMode;
-        mInTabletMode = (mode == UserInteractionMode_Touch) ? eTabletModeOn : eTabletModeOff;
-        if (mInTabletMode != oldTabletModeState) {
-          nsCOMPtr<nsIObserverService> observerService =
-            mozilla::services::GetObserverService();
-          NS_NAMED_LITERAL_STRING(tabletMode, "tablet-mode");
-          NS_NAMED_LITERAL_STRING(normalMode, "normal-mode");
-          observerService->NotifyObservers(nullptr, "tablet-mode-change",
-            ((mInTabletMode == eTabletModeOn) ? tabletMode.get() : normalMode.get()));
-        }
-      }
-    }
-  }
-
-  return NS_OK;
-}
-
+namespace ABI {
+  namespace Windows {
+    namespace UI {
+      namespace ViewManagement {
+        interface IUIViewSettings;
+        MIDL_INTERFACE("C63657F6-8850-470D-88F8-455E16EA2C26")
+          IUIViewSettings : public IInspectable
+          {
+            public:
+              virtual HRESULT STDMETHODCALLTYPE get_UserInteractionMode(UserInteractionMode *value) = 0;
+          };
+
+        extern const __declspec(selectany) IID & IID_IUIViewSettings = __uuidof(IUIViewSettings);
+      }
+    }
+  }
+}
+#endif
+
+#ifndef IUIViewSettingsInterop
+
+typedef interface IUIViewSettingsInterop IUIViewSettingsInterop;
+
+MIDL_INTERFACE("3694dbf9-8f68-44be-8ff5-195c98ede8a6")
+IUIViewSettingsInterop : public IInspectable
+{
+public:
+  virtual HRESULT STDMETHODCALLTYPE GetForWindow(HWND hwnd, REFIID riid, void **ppv) = 0;
+};
+#endif
+
+WindowsUIUtils::WindowsUIUtils() :
+  mInTabletMode(eTabletModeUnknown)
+{
+}
+
+WindowsUIUtils::~WindowsUIUtils()
+{
+}
+
+/*
+ * Implement the nsISupports methods...
+ */
+NS_IMPL_ISUPPORTS(WindowsUIUtils,
+                  nsIWindowsUIUtils)
+
+NS_IMETHODIMP
+WindowsUIUtils::GetInTabletMode(bool* aResult)
+{
+  if (mInTabletMode == eTabletModeUnknown) {
+    UpdateTabletModeState();
+  }
+  *aResult = mInTabletMode == eTabletModeOn;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+WindowsUIUtils::UpdateTabletModeState()
+{
+  if (!IsWin10OrLater()) {
+    return NS_OK;
+  }
+
+  nsCOMPtr<nsIAppShellService> appShell(do_GetService(NS_APPSHELLSERVICE_CONTRACTID));
+  nsCOMPtr<nsIXULWindow> hiddenWindow;
+
+  nsresult rv = appShell->GetHiddenWindow(getter_AddRefs(hiddenWindow));
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  nsCOMPtr<nsIDocShell> docShell;
+  rv = hiddenWindow->GetDocShell(getter_AddRefs(docShell));
+  if (NS_FAILED(rv) || !docShell) {
+    return rv;
+  }
+
+  nsCOMPtr<nsIBaseWindow> baseWindow(do_QueryInterface(docShell));
+
+  if (!baseWindow)
+    return NS_ERROR_FAILURE;
+
+  nsCOMPtr<nsIWidget> widget;
+  baseWindow->GetMainWidget(getter_AddRefs(widget));
+
+  if (!widget)
+    return NS_ERROR_FAILURE;
+
+  HWND winPtr = (HWND)widget->GetNativeData(NS_NATIVE_WINDOW);
+  ComPtr<IUIViewSettingsInterop> uiViewSettingsInterop;
+
+  HRESULT hr = GetActivationFactory(
+      HStringReference(RuntimeClass_Windows_UI_ViewManagement_UIViewSettings).Get(),
+      &uiViewSettingsInterop);
+  if (SUCCEEDED(hr)) {
+    ComPtr<IUIViewSettings> uiViewSettings;
+    hr = uiViewSettingsInterop->GetForWindow(winPtr, IID_PPV_ARGS(&uiViewSettings));
+    if (SUCCEEDED(hr)) {
+      UserInteractionMode mode;
+      hr = uiViewSettings->get_UserInteractionMode(&mode);
+      if (SUCCEEDED(hr)) {
+        TabletModeState oldTabletModeState = mInTabletMode;
+        mInTabletMode = (mode == UserInteractionMode_Touch) ? eTabletModeOn : eTabletModeOff;
+        if (mInTabletMode != oldTabletModeState) {
+          nsCOMPtr<nsIObserverService> observerService =
+            mozilla::services::GetObserverService();
+          NS_NAMED_LITERAL_STRING(tabletMode, "tablet-mode");
+          NS_NAMED_LITERAL_STRING(normalMode, "normal-mode");
+          observerService->NotifyObservers(nullptr, "tablet-mode-change",
+            ((mInTabletMode == eTabletModeOn) ? tabletMode.get() : normalMode.get()));
+        }
+      }
+    }
+  }
+
+  return NS_OK;
+}
+