Bug 1743632 [Linux] Use GL Fence in SharedSurfaceDMABUF

- Implement SharedSurface_DMABUF::WaitForBufferOwnership() by DMABufSurface::FenceWait().

Depends on D133901

Differential Revision: https://phabricator.services.mozilla.com/D133902

gfx/gl/SharedSurfaceDMABUF.cpp

@@ -46,6 +46,8 @@ SharedSurface_DMABUF::~SharedSurface_DMABUF() {
 
 void SharedSurface_DMABUF::ProducerReleaseImpl() { mSurface->FenceSet(); }
 
+void SharedSurface_DMABUF::WaitForBufferOwnership() { mSurface->FenceWait(); }
+
 Maybe<layers::SurfaceDescriptor> SharedSurface_DMABUF::ToSurfaceDescriptor() {
   layers::SurfaceDescriptor desc;
   if (!mSurface->Serialize(desc)) return {};

gfx/gl/SharedSurfaceDMABUF.h

@@ -43,6 +43,8 @@ class SharedSurface_DMABUF final : public SharedSurface {
   virtual void ProducerReadReleaseImpl() override {}
 
   Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor() override;
+
+  void WaitForBufferOwnership() override;
 };
 
 class SurfaceFactory_DMABUF : public SurfaceFactory {