diff --git a/gfx/gl/GLScreenBuffer.cpp b/gfx/gl/GLScreenBuffer.cpp
index 0fc68d7c9409..82b5abc098ed 100644
--- a/gfx/gl/GLScreenBuffer.cpp
+++ b/gfx/gl/GLScreenBuffer.cpp
@@ -29,7 +29,7 @@
 #include "SharedSurfaceIO.h"
 #endif
 
-#ifdef GL_PROVIDER_GLX
+#ifdef MOZ_X11
 #include "GLXLibrary.h"
 #include "SharedSurfaceGLX.h"
 #endif
@@ -83,7 +83,7 @@ GLScreenBuffer::CreateFactory(GLContext* gl,
     if (useGl) {
 #if defined(XP_MACOSX)
         factory = SurfaceFactory_IOSurface::Create(gl, caps, ipcChannel, flags);
-#elif defined(GL_PROVIDER_GLX)
+#elif defined(MOZ_X11)
         if (sGLXLibrary.UseTextureFromPixmap())
             factory = SurfaceFactory_GLXDrawable::Create(gl, caps, ipcChannel, flags);
 #elif defined(MOZ_WIDGET_UIKIT)
@@ -119,7 +119,7 @@ GLScreenBuffer::CreateFactory(GLContext* gl,
 #endif
     }
 
-#ifdef GL_PROVIDER_GLX
+#ifdef MOZ_X11
     if (!factory && sGLXLibrary.UseTextureFromPixmap()) {
         factory = SurfaceFactory_GLXDrawable::Create(gl, caps, ipcChannel, flags);
     }
diff --git a/gfx/layers/client/TextureClient.cpp b/gfx/layers/client/TextureClient.cpp
index 1e05ae443cf6..f0187655176d 100644
--- a/gfx/layers/client/TextureClient.cpp
+++ b/gfx/layers/client/TextureClient.cpp
@@ -45,10 +45,8 @@
 #endif
 #ifdef MOZ_X11
 #include "mozilla/layers/TextureClientX11.h"
-#ifdef GL_PROVIDER_GLX
 #include "GLXLibrary.h"
 #endif
-#endif
 
 #ifdef XP_MACOSX
 #include "mozilla/layers/MacIOSurfaceTextureClientOGL.h"
@@ -1127,7 +1125,6 @@ TextureClient::CreateForDrawing(TextureForwarder* aAllocator,
   {
     data = X11TextureData::Create(aSize, aFormat, aTextureFlags, aAllocator);
   }
-#ifdef GL_PROVIDER_GLX
   if (!data && aLayersBackend == LayersBackend::LAYERS_OPENGL &&
       type == gfxSurfaceType::Xlib &&
       aFormat != SurfaceFormat::A8 &&
@@ -1136,7 +1133,6 @@ TextureClient::CreateForDrawing(TextureForwarder* aAllocator,
     data = X11TextureData::Create(aSize, aFormat, aTextureFlags, aAllocator);
   }
 #endif
-#endif
 
 #ifdef XP_MACOSX
   if (!data && gfxPrefs::UseIOSurfaceTextures()) {
diff --git a/gfx/layers/composite/X11TextureHost.cpp b/gfx/layers/composite/X11TextureHost.cpp
index 94cb3f2f9594..89afea5f7155 100644
--- a/gfx/layers/composite/X11TextureHost.cpp
+++ b/gfx/layers/composite/X11TextureHost.cpp
@@ -7,10 +7,8 @@
 #include "X11TextureHost.h"
 #include "mozilla/layers/BasicCompositor.h"
 #include "mozilla/layers/X11TextureSourceBasic.h"
-#ifdef GL_PROVIDER_GLX
 #include "mozilla/layers/CompositorOGL.h"
 #include "mozilla/layers/X11TextureSourceOGL.h"
-#endif
 #include "gfxXlibSurface.h"
 #include "gfx2DGlue.h"
 
@@ -43,12 +41,10 @@ X11TextureHost::Lock()
         mTextureSource =
           new X11TextureSourceBasic(mCompositor->AsBasicCompositor(), mSurface);
         break;
-#ifdef GL_PROVIDER_GLX
       case LayersBackend::LAYERS_OPENGL:
         mTextureSource =
           new X11TextureSourceOGL(mCompositor->AsCompositorOGL(), mSurface);
         break;
-#endif
       default:
         return false;
     }
@@ -78,11 +74,9 @@ X11TextureHost::GetFormat() const
     return SurfaceFormat::UNKNOWN;
   }
   gfxContentType type = mSurface->GetContentType();
-#ifdef GL_PROVIDER_GLX
   if (mCompositor->GetBackendType() == LayersBackend::LAYERS_OPENGL) {
     return X11TextureSourceOGL::ContentTypeToSurfaceFormat(type);
   }
-#endif
   return X11TextureSourceBasic::ContentTypeToSurfaceFormat(type);
 }
 
diff --git a/gfx/layers/ipc/ShadowLayerUtilsX11.cpp b/gfx/layers/ipc/ShadowLayerUtilsX11.cpp
index e011fe3aa2e3..46bea3f67f2e 100644
--- a/gfx/layers/ipc/ShadowLayerUtilsX11.cpp
+++ b/gfx/layers/ipc/ShadowLayerUtilsX11.cpp
@@ -74,11 +74,9 @@ SurfaceDescriptorX11::SurfaceDescriptorX11(gfxXlibSurface* aSurf,
     mFormat = cairo_xlib_surface_get_visual(aSurf->CairoSurface())->visualid;
   }
 
-#ifdef GL_PROVIDER_GLX
   if (aForwardGLX) {
     mGLXPixmap = aSurf->GetGLXPixmap();
   }
-#endif
 }
 
 SurfaceDescriptorX11::SurfaceDescriptorX11(Drawable aDrawable, XID aFormatID,
@@ -109,10 +107,8 @@ SurfaceDescriptorX11::OpenForeign() const
     surf = new gfxXlibSurface(display, mId, visual, mSize);
   }
 
-#ifdef GL_PROVIDER_GLX
   if (mGLXPixmap)
     surf->BindGLXPixmap(mGLXPixmap);
-#endif
 
   return surf->CairoStatus() ? nullptr : surf.forget();
 }
diff --git a/gfx/layers/opengl/X11TextureSourceOGL.cpp b/gfx/layers/opengl/X11TextureSourceOGL.cpp
index 84769cc594a9..1af4a4d819cb 100644
--- a/gfx/layers/opengl/X11TextureSourceOGL.cpp
+++ b/gfx/layers/opengl/X11TextureSourceOGL.cpp
@@ -4,8 +4,6 @@
  * 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/. */
 
-#ifdef GL_PROVIDER_GLX
-
 #include "X11TextureSourceOGL.h"
 #include "gfxXlibSurface.h"
 #include "gfx2DGlue.h"
@@ -103,4 +101,3 @@ X11TextureSourceOGL::ContentTypeToSurfaceFormat(gfxContentType aType)
 }
 }
 
-#endif
diff --git a/gfx/layers/opengl/X11TextureSourceOGL.h b/gfx/layers/opengl/X11TextureSourceOGL.h
index 3ce8b86e16a4..9886124e13f9 100644
--- a/gfx/layers/opengl/X11TextureSourceOGL.h
+++ b/gfx/layers/opengl/X11TextureSourceOGL.h
@@ -7,7 +7,7 @@
 #ifndef MOZILLA_GFX_X11TEXTURESOURCEOGL__H
 #define MOZILLA_GFX_X11TEXTURESOURCEOGL__H
 
-#ifdef GL_PROVIDER_GLX
+#ifdef MOZ_X11
 
 #include "mozilla/layers/CompositorOGL.h"
 #include "mozilla/layers/TextureHostOGL.h"
diff --git a/gfx/thebes/gfxPlatformGtk.cpp b/gfx/thebes/gfxPlatformGtk.cpp
index 96ff2fe3dc5f..317063288b7e 100644
--- a/gfx/thebes/gfxPlatformGtk.cpp
+++ b/gfx/thebes/gfxPlatformGtk.cpp
@@ -42,11 +42,9 @@
 #include "mozilla/Preferences.h"
 #include "mozilla/X11Util.h"
 
-#ifdef GL_PROVIDER_GLX
 #include "GLContextProvider.h"
 #include "GLContextGLX.h"
 #include "GLXLibrary.h"
-#endif
 
 /* Undefine the Status from Xlib since it will conflict with system headers on OSX */
 #if defined(__APPLE__) && defined(Status)
@@ -508,7 +506,7 @@ gfxPlatformGtk::CheckVariationFontSupport()
   return major * 1000000 + minor * 1000 + patch >= 2007001;
 }
 
-#ifdef GL_PROVIDER_GLX
+#ifdef MOZ_X11
 
 class GLXVsyncSource final : public VsyncSource
 {
diff --git a/gfx/thebes/gfxPlatformGtk.h b/gfx/thebes/gfxPlatformGtk.h
index 29f475c4b751..23d588fc8d9f 100644
--- a/gfx/thebes/gfxPlatformGtk.h
+++ b/gfx/thebes/gfxPlatformGtk.h
@@ -97,7 +97,7 @@ public:
 
     bool AccelerateLayersByDefault() override;
 
-#ifdef GL_PROVIDER_GLX
+#ifdef MOZ_X11
     already_AddRefed<mozilla::gfx::VsyncSource> CreateHardwareVsyncSource() override;
 #endif
 
diff --git a/gfx/thebes/gfxXlibSurface.cpp b/gfx/thebes/gfxXlibSurface.cpp
index cefcedc76b90..bf5124e26bdc 100644
--- a/gfx/thebes/gfxXlibSurface.cpp
+++ b/gfx/thebes/gfxXlibSurface.cpp
@@ -25,9 +25,7 @@ using namespace mozilla::gfx;
 
 gfxXlibSurface::gfxXlibSurface(Display *dpy, Drawable drawable, Visual *visual)
     : mPixmapTaken(false), mDisplay(dpy), mDrawable(drawable)
-#if defined(GL_PROVIDER_GLX)
     , mGLXPixmap(X11None)
-#endif
 {
     const gfx::IntSize size = DoSizeQuery();
     cairo_surface_t *surf = cairo_xlib_surface_create(dpy, drawable, visual, size.width, size.height);
@@ -36,9 +34,7 @@ gfxXlibSurface::gfxXlibSurface(Display *dpy, Drawable drawable, Visual *visual)
 
 gfxXlibSurface::gfxXlibSurface(Display *dpy, Drawable drawable, Visual *visual, const gfx::IntSize& size)
     : mPixmapTaken(false), mDisplay(dpy), mDrawable(drawable)
-#if defined(GL_PROVIDER_GLX)
     , mGLXPixmap(X11None)
-#endif
 {
     NS_ASSERTION(Factory::CheckSurfaceSize(size, XLIB_IMAGE_SIDE_SIZE_LIMIT),
                  "Bad size");
@@ -49,11 +45,10 @@ gfxXlibSurface::gfxXlibSurface(Display *dpy, Drawable drawable, Visual *visual,
 
 gfxXlibSurface::gfxXlibSurface(Screen *screen, Drawable drawable, XRenderPictFormat *format,
                                const gfx::IntSize& size)
-    : mPixmapTaken(false), mDisplay(DisplayOfScreen(screen)),
-      mDrawable(drawable)
-#if defined(GL_PROVIDER_GLX)
-      , mGLXPixmap(X11None)
-#endif
+    : mPixmapTaken(false)
+    , mDisplay(DisplayOfScreen(screen))
+    , mDrawable(drawable)
+    , mGLXPixmap(X11None)
 {
     NS_ASSERTION(Factory::CheckSurfaceSize(size, XLIB_IMAGE_SIDE_SIZE_LIMIT),
                  "Bad Size");
@@ -67,9 +62,7 @@ gfxXlibSurface::gfxXlibSurface(Screen *screen, Drawable drawable, XRenderPictFor
 
 gfxXlibSurface::gfxXlibSurface(cairo_surface_t *csurf)
     : mPixmapTaken(false)
-#if defined(GL_PROVIDER_GLX)
-      , mGLXPixmap(X11None)
-#endif
+    , mGLXPixmap(X11None)
 {
     MOZ_ASSERT(cairo_surface_status(csurf) == 0,
                "Not expecting an error surface");
@@ -84,11 +77,9 @@ gfxXlibSurface::~gfxXlibSurface()
 {
     // gfxASurface's destructor calls RecordMemoryFreed().
     if (mPixmapTaken) {
-#if defined(GL_PROVIDER_GLX)
         if (mGLXPixmap) {
             gl::sGLXLibrary.DestroyPixmap(mDisplay, mGLXPixmap);
         }
-#endif
         XFreePixmap (mDisplay, mDrawable);
     }
 }
@@ -272,12 +263,10 @@ gfxXlibSurface::CreateSimilarSurface(gfxContentType aContent,
 void
 gfxXlibSurface::Finish()
 {
-#if defined(GL_PROVIDER_GLX)
     if (mPixmapTaken && mGLXPixmap) {
         gl::sGLXLibrary.DestroyPixmap(mDisplay, mGLXPixmap);
         mGLXPixmap = X11None;
     }
-#endif
     gfxASurface::Finish();
 }
 
@@ -587,7 +576,6 @@ gfxXlibSurface::XRenderFormat()
     return cairo_xlib_surface_get_xrender_format(CairoSurface());
 }
 
-#if defined(GL_PROVIDER_GLX)
 GLXPixmap
 gfxXlibSurface::GetGLXPixmap()
 {
@@ -612,4 +600,3 @@ gfxXlibSurface::BindGLXPixmap(GLXPixmap aPixmap)
     mGLXPixmap = aPixmap;
 }
 
-#endif
diff --git a/gfx/thebes/gfxXlibSurface.h b/gfx/thebes/gfxXlibSurface.h
index c7ae9b3eac0d..0bb44e702058 100644
--- a/gfx/thebes/gfxXlibSurface.h
+++ b/gfx/thebes/gfxXlibSurface.h
@@ -12,9 +12,7 @@
 #include <X11/Xlib.h>
 #include "X11UndefineNone.h"
 
-#if defined(GL_PROVIDER_GLX)
 #include "GLXLibrary.h"
-#endif
 
 #include "nsSize.h"
 
@@ -86,12 +84,10 @@ public:
     // Find a visual and colormap pair suitable for rendering to this surface.
     bool GetColormapAndVisual(Colormap* colormap, Visual **visual);
 
-#if defined(GL_PROVIDER_GLX)
     GLXPixmap GetGLXPixmap();
     // Binds a GLXPixmap backed by this context's surface.
     // Primarily for use in sharing surfaces.
     void BindGLXPixmap(GLXPixmap aPixmap);
-#endif
 
     // Return true if cairo will take its slow path when this surface is used
     // in a pattern with EXTEND_PAD.  As a workaround for XRender's RepeatPad
@@ -114,9 +110,7 @@ protected:
 
     const mozilla::gfx::IntSize DoSizeQuery();
 
-#if defined(GL_PROVIDER_GLX)
     GLXPixmap mGLXPixmap;
-#endif
 };
 
 #endif /* GFX_XLIBSURFACE_H */