firefox/mozilla-1898476-sync.patch

diff --git a/gfx/webrender_bindings/RenderCompositorEGL.cpp b/gfx/webrender_bindings/RenderCompositorEGL.cpp
--- a/gfx/webrender_bindings/RenderCompositorEGL.cpp
+++ b/gfx/webrender_bindings/RenderCompositorEGL.cpp
@@ -154,6 +154,13 @@ RenderedFrameId RenderCompositorEGL::End
     }
     gl()->SetDamage(bufferInvalid);
   }
+
+#ifdef MOZ_WIDGET_GTK
+  UniquePtr<MozContainerSurfaceLock> lock;
+  if (mWidget->AsGTK()) {
+    lock = mWidget->AsGTK()->LockSurface();
+  }
+#endif
   gl()->SwapBuffers();
   return frameId;
 }
diff --git a/widget/gtk/GtkCompositorWidget.cpp b/widget/gtk/GtkCompositorWidget.cpp
--- a/widget/gtk/GtkCompositorWidget.cpp
+++ b/widget/gtk/GtkCompositorWidget.cpp
@@ -211,5 +211,11 @@ bool GtkCompositorWidget::IsPopup() {
 }
 #endif
 
+#if defined(MOZ_WAYLAND)
+UniquePtr<MozContainerSurfaceLock> GtkCompositorWidget::LockSurface() {
+  return mWidget ? mWidget->LockSurface() : nullptr;
+}
+#endif
+
 }  // namespace widget
 }  // namespace mozilla
diff --git a/widget/gtk/GtkCompositorWidget.h b/widget/gtk/GtkCompositorWidget.h
--- a/widget/gtk/GtkCompositorWidget.h
+++ b/widget/gtk/GtkCompositorWidget.h
@@ -10,6 +10,10 @@
 #include "mozilla/DataMutex.h"
 #include "mozilla/widget/CompositorWidget.h"
 #include "WindowSurfaceProvider.h"
+#if defined(MOZ_WAYLAND)
+#  include "mozilla/UniquePtr.h"
+#  include "MozContainerSurfaceLock.h"
+#endif
 
 class nsIWidget;
 class nsWindow;
@@ -96,6 +100,8 @@ class GtkCompositorWidget : public Compo
   void NotifyClientSizeChanged(const LayoutDeviceIntSize& aClientSize) override;
   GtkCompositorWidget* AsGtkCompositorWidget() override { return this; }
 
+  UniquePtr<MozContainerSurfaceLock> LockSurface();
+
  private:
 #if defined(MOZ_WAYLAND)
   void ConfigureWaylandBackend();
diff --git a/widget/gtk/MozContainerSurfaceLock.cpp b/widget/gtk/MozContainerSurfaceLock.cpp
new file mode 100644
--- /dev/null
+++ b/widget/gtk/MozContainerSurfaceLock.cpp
@@ -0,0 +1,27 @@
+/* -*- 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 "MozContainerSurfaceLock.h"
+#include "MozContainer.h"
+#include "WidgetUtilsGtk.h"
+
+MozContainerSurfaceLock::MozContainerSurfaceLock(MozContainer* aContainer) {
+  mContainer = aContainer;
+#ifdef MOZ_WAYLAND
+  if (GdkIsWaylandDisplay()) {
+    mSurface = moz_container_wayland_surface_lock(aContainer);
+  }
+#endif
+}
+
+MozContainerSurfaceLock::~MozContainerSurfaceLock() {
+#ifdef MOZ_WAYLAND
+  if (GdkIsWaylandDisplay()) {
+    moz_container_wayland_surface_unlock(mContainer, &mSurface);
+  }
+#endif
+}
+
+struct wl_surface* MozContainerSurfaceLock::GetSurface() { return mSurface; }
diff --git a/widget/gtk/MozContainerSurfaceLock.h b/widget/gtk/MozContainerSurfaceLock.h
new file mode 100644
--- /dev/null
+++ b/widget/gtk/MozContainerSurfaceLock.h
@@ -0,0 +1,25 @@
+/* -*- 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/. */
+
+#ifndef widget_gtk_MozContainerSurfaceLock_h
+#define widget_gtk_MozContainerSurfaceLock_h
+
+struct wl_surface;
+struct _MozContainer;
+typedef struct _MozContainer MozContainer;
+
+class MozContainerSurfaceLock {
+ public:
+  explicit MozContainerSurfaceLock(MozContainer* aContainer);
+  ~MozContainerSurfaceLock();
+
+  struct wl_surface* GetSurface();
+
+ private:
+  MozContainer* mContainer = nullptr;
+  struct wl_surface* mSurface = nullptr;
+};
+
+#endif  // widget_gtk_MozContainerSurfaceLock_h
diff --git a/widget/gtk/MozContainerWayland.cpp b/widget/gtk/MozContainerWayland.cpp
--- a/widget/gtk/MozContainerWayland.cpp
+++ b/widget/gtk/MozContainerWayland.cpp
@@ -87,23 +87,6 @@ static void moz_container_wayland_set_op
     const MutexAutoLock& aProofOfLock, MozContainer* container,
     const LayoutDeviceIntRegion&);
 
-// Lock mozcontainer and get wayland surface of it. You need to pair with
-// moz_container_wayland_surface_unlock() even
-// if moz_container_wayland_surface_lock() fails and returns nullptr.
-static struct wl_surface* moz_container_wayland_surface_lock(
-    MozContainer* container);
-static void moz_container_wayland_surface_unlock(MozContainer* container,
-                                                 struct wl_surface** surface);
-
-MozContainerSurfaceLock::MozContainerSurfaceLock(MozContainer* aContainer) {
-  mContainer = aContainer;
-  mSurface = moz_container_wayland_surface_lock(aContainer);
-}
-MozContainerSurfaceLock::~MozContainerSurfaceLock() {
-  moz_container_wayland_surface_unlock(mContainer, &mSurface);
-}
-struct wl_surface* MozContainerSurfaceLock::GetSurface() { return mSurface; }
-
 // Invalidate gtk wl_surface to commit changes to wl_subsurface.
 // wl_subsurface changes are effective when parent surface is commited.
 static void moz_container_wayland_invalidate(MozContainer* container) {
diff --git a/widget/gtk/MozContainerWayland.h b/widget/gtk/MozContainerWayland.h
--- a/widget/gtk/MozContainerWayland.h
+++ b/widget/gtk/MozContainerWayland.h
@@ -13,6 +13,7 @@
 #include <vector>
 #include "mozilla/Mutex.h"
 #include "WindowSurface.h"
+#include "MozContainerSurfaceLock.h"
 
 /*
  * MozContainer
@@ -61,15 +62,12 @@ struct _MozContainerClass;
 typedef struct _MozContainer MozContainer;
 typedef struct _MozContainerClass MozContainerClass;
 
-class MozContainerSurfaceLock {
-  MozContainer* mContainer;
-  struct wl_surface* mSurface;
-
- public:
-  explicit MozContainerSurfaceLock(MozContainer* aContainer);
-  ~MozContainerSurfaceLock();
-  struct wl_surface* GetSurface();
-};
+// Lock mozcontainer and get wayland surface of it. You need to pair with
+// moz_container_wayland_surface_unlock() even
+// if moz_container_wayland_surface_lock() fails and returns nullptr.
+struct wl_surface* moz_container_wayland_surface_lock(MozContainer* container);
+void moz_container_wayland_surface_unlock(MozContainer* container,
+                                          struct wl_surface** surface);
 
 void moz_container_wayland_map(GtkWidget*);
 gboolean moz_container_wayland_map_event(GtkWidget*, GdkEventAny*);
diff --git a/widget/gtk/moz.build b/widget/gtk/moz.build
--- a/widget/gtk/moz.build
+++ b/widget/gtk/moz.build
@@ -33,6 +33,7 @@ if CONFIG["MOZ_ENABLE_V4L2"]:
 
 EXPORTS += [
     "MozContainer.h",
+    "MozContainerSurfaceLock.h",
     "nsGTKToolkit.h",
     "nsGtkUtils.h",
     "nsImageToPixbuf.h",
@@ -71,6 +72,7 @@ UNIFIED_SOURCES += [
     "IMContextWrapper.cpp",
     "InProcessGtkCompositorWidget.cpp",
     "MozContainer.cpp",
+    "MozContainerSurfaceLock.cpp",
     "MPRISServiceHandler.cpp",
     "NativeKeyBindings.cpp",
     "NativeMenuGtk.cpp",
@@ -114,6 +116,7 @@ if CONFIG["MOZ_WAYLAND"]:
         "WindowSurfaceWaylandMultiBuffer.cpp",
     ]
     EXPORTS.mozilla.widget += [
+        "MozContainerSurfaceLock.h",
         "MozContainerWayland.h",
         "nsWaylandDisplay.h",
         "WaylandBuffer.h",
diff --git a/widget/gtk/nsWindow.cpp b/widget/gtk/nsWindow.cpp
--- a/widget/gtk/nsWindow.cpp
+++ b/widget/gtk/nsWindow.cpp
@@ -10196,3 +10196,10 @@ void nsWindow::SetDragSource(GdkDragCont
     }
   }
 }
+
+UniquePtr<MozContainerSurfaceLock> nsWindow::LockSurface() {
+  if (mIsDestroyed) {
+    return nullptr;
+  }
+  return MakeUnique<MozContainerSurfaceLock>(mContainer);
+}
diff --git a/widget/gtk/nsWindow.h b/widget/gtk/nsWindow.h
--- a/widget/gtk/nsWindow.h
+++ b/widget/gtk/nsWindow.h
@@ -42,6 +42,7 @@
 #  include "base/thread.h"
 #  include "WaylandVsyncSource.h"
 #  include "nsClipboardWayland.h"
+#  include "MozContainerSurfaceLock.h"
 #endif
 
 #ifdef MOZ_LOGGING
@@ -421,6 +422,8 @@ class nsWindow final : public nsBaseWidg
 
   static nsWindow* GetFocusedWindow();
 
+  mozilla::UniquePtr<MozContainerSurfaceLock> LockSurface();
+
 #ifdef MOZ_WAYLAND
   // Use xdg-activation protocol to transfer focus from gFocusWindow to aWindow.
   static void TransferFocusToWaylandWindow(nsWindow* aWindow);