diff --git a/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.cpp b/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.cpp
index 98853f743eab..c7c7e20d850b 100644
--- a/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.cpp
+++ b/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.cpp
@@ -107,71 +107,5 @@ MacIOSurfaceTextureHostOGL::gl() const
   return mProvider ? mProvider->GetGLContext() : nullptr;
 }
 
-MacIOSurfaceTextureSourceOGL::MacIOSurfaceTextureSourceOGL(
-                                CompositorOGL* aCompositor,
-                                MacIOSurface* aSurface)
-  : mCompositor(aCompositor)
-  , mSurface(aSurface)
-{
-  MOZ_ASSERT(aCompositor);
-  MOZ_COUNT_CTOR(MacIOSurfaceTextureSourceOGL);
-}
-
-MacIOSurfaceTextureSourceOGL::~MacIOSurfaceTextureSourceOGL()
-{
-  MOZ_COUNT_DTOR(MacIOSurfaceTextureSourceOGL);
-}
-
-gfx::IntSize
-MacIOSurfaceTextureSourceOGL::GetSize() const
-{
-  return gfx::IntSize(mSurface->GetDevicePixelWidth(),
-                      mSurface->GetDevicePixelHeight());
-}
-
-gfx::SurfaceFormat
-MacIOSurfaceTextureSourceOGL::GetFormat() const
-{
-  return mSurface->HasAlpha() ? gfx::SurfaceFormat::R8G8B8A8
-                              : gfx::SurfaceFormat::R8G8B8X8;
-}
-
-void
-MacIOSurfaceTextureSourceOGL::BindTexture(GLenum aTextureUnit,
-                                          gfx::SamplingFilter aSamplingFilter)
-{
-  gl::GLContext* gl = this->gl();
-  if (!gl || !gl->MakeCurrent()) {
-    NS_WARNING("Trying to bind a texture without a working GLContext");
-    return;
-  }
-  GLuint tex = mCompositor->GetTemporaryTexture(GetTextureTarget(), aTextureUnit);
-
-  gl->fActiveTexture(aTextureUnit);
-  gl->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, tex);
-  mSurface->CGLTexImageIOSurface2D(gl::GLContextCGL::Cast(gl)->GetCGLContext());
-  ApplySamplingFilterToBoundTexture(gl, aSamplingFilter, LOCAL_GL_TEXTURE_RECTANGLE_ARB);
-}
-
-void
-MacIOSurfaceTextureSourceOGL::SetTextureSourceProvider(TextureSourceProvider* aProvider)
-{
-  CompositorOGL* ogl = nullptr;
-  if (Compositor* compositor = aProvider->AsCompositor()) {
-    ogl = compositor->AsCompositorOGL();
-  }
-
-  mCompositor = ogl;
-  if (mCompositor && mNextSibling) {
-    mNextSibling->SetTextureSourceProvider(aProvider);
-  }
-}
-
-gl::GLContext*
-MacIOSurfaceTextureSourceOGL::gl() const
-{
-  return mCompositor ? mCompositor->gl() : nullptr;
-}
-
 } // namespace layers
 } // namespace mozilla
diff --git a/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.h b/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.h
index 939b5b46069a..20294ea0262a 100644
--- a/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.h
+++ b/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.h
@@ -14,49 +14,6 @@ class MacIOSurface;
 namespace mozilla {
 namespace layers {
 
-/**
- * A texture source meant for use with MacIOSurfaceTextureHostOGL.
- *
- * It does not own any GL texture, and attaches its shared handle to one of
- * the compositor's temporary textures when binding.
- */
-class MacIOSurfaceTextureSourceOGL : public TextureSource
-                                   , public TextureSourceOGL
-{
-public:
-  MacIOSurfaceTextureSourceOGL(CompositorOGL* aCompositor,
-                               MacIOSurface* aSurface);
-  virtual ~MacIOSurfaceTextureSourceOGL();
-
-  virtual const char* Name() const override { return "MacIOSurfaceTextureSourceOGL"; }
-
-  virtual TextureSourceOGL* AsSourceOGL() override { return this; }
-
-  virtual void BindTexture(GLenum activetex,
-                           gfx::SamplingFilter aSamplingFilter) override;
-
-  virtual bool IsValid() const override { return !!gl(); }
-
-  virtual gfx::IntSize GetSize() const override;
-
-  virtual gfx::SurfaceFormat GetFormat() const override;
-
-  virtual GLenum GetTextureTarget() const override { return LOCAL_GL_TEXTURE_RECTANGLE_ARB; }
-
-  virtual GLenum GetWrapMode() const override { return LOCAL_GL_CLAMP_TO_EDGE; }
-
-  // MacIOSurfaceTextureSourceOGL doesn't own any gl texture
-  virtual void DeallocateDeviceData() override {}
-
-  virtual void SetTextureSourceProvider(TextureSourceProvider* aProvider) override;
-
-  gl::GLContext* gl() const;
-
-protected:
-  RefPtr<CompositorOGL> mCompositor;
-  RefPtr<MacIOSurface> mSurface;
-};
-
 /**
  * A TextureHost for shared MacIOSurface
  *