Bug 1534557 - Implement GtkCompositorWidget::GetEGLNativeWindow() for GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET r=jgilbert

Differential Revision: https://phabricator.services.mozilla.com/D23106

--HG--
extra : moz-landing-system : lando

gfx/gl/GLContextProviderEGL.cpp

@@ -7,8 +7,7 @@
 #  define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
     ((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_EGL_WINDOW))
 #  define GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget) \
-    ((EGLNativeWindowType)aWidget->RealWidget()->GetNativeData( \
-        NS_NATIVE_EGL_WINDOW))
+    (aWidget->AsX11()->GetEGLNativeWindow())
 #elif defined(MOZ_WIDGET_ANDROID)
 #  define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
     ((EGLNativeWindowType)aWidget->GetNativeData(NS_JAVA_SURFACE))
@@ -73,6 +72,10 @@
 #include "ScopedGLHelpers.h"
 #include "TextureImageEGL.h"
 
+#if defined(MOZ_WIDGET_GTK)
+#  include "mozilla/widget/GtkCompositorWidget.h"
+#endif
+
 #if defined(MOZ_WAYLAND)
 #  include "nsAutoPtr.h"
 #  include "nsDataHashtable.h"

widget/gtk/GtkCompositorWidget.cpp

@@ -103,5 +103,9 @@ uintptr_t GtkCompositorWidget::GetWidgetKey() {
   return reinterpret_cast<uintptr_t>(mWidget);
 }
 
+EGLNativeWindowType GtkCompositorWidget::GetEGLNativeWindow() {
+  return (EGLNativeWindowType)mWidget->GetNativeData(NS_NATIVE_EGL_WINDOW);
+}
+
 }  // namespace widget
 }  // namespace mozilla

widget/gtk/GtkCompositorWidget.h

@@ -6,6 +6,7 @@
 #ifndef widget_gtk_GtkCompositorWidget_h
 #define widget_gtk_GtkCompositorWidget_h
 
+#include "GLDefs.h"
 #include "mozilla/widget/CompositorWidget.h"
 #include "WindowSurfaceProvider.h"
 
@@ -62,6 +63,8 @@ class GtkCompositorWidget : public CompositorWidget,
   Display* XDisplay() const { return mXDisplay; }
   Window XWindow() const { return mXWindow; }
 
+  EGLNativeWindowType GetEGLNativeWindow();
+
   // PlatformCompositorWidgetDelegate Overrides
 
   void NotifyClientSizeChanged(const LayoutDeviceIntSize& aClientSize) override;