Split surface id and simplify connecting to surfaces service

examples/ganesh_app/texture_uploader.cc

Index: examples/ganesh_app/texture_uploader.cc
diff --git a/examples/ganesh_app/texture_uploader.cc b/examples/ganesh_app/texture_uploader.cc
index 7b77d8da0084c89a1876d1458485d53374c27a17..2c8f831dd0ca4d08331d20378ab9dd584e5bea66 100644
--- a/examples/ganesh_app/texture_uploader.cc
+++ b/examples/ganesh_app/texture_uploader.cc
@@ -132,11 +132,11 @@ void TextureUploader::EnsureSurfaceForSize(const mojo::Size& size) {
     surface_->DestroySurface(surface_id_.Clone());
   } else {
     surface_id_ = mojo::SurfaceId::New();
-    surface_id_->id = static_cast<uint64_t>(id_namespace_) << 32;
+    surface_id_->id_namespace = id_namespace_;
   }
 
-  surface_id_->id++;
-  surface_->CreateSurface(surface_id_.Clone(), size.Clone());
+  surface_id_->local++;
+  surface_->CreateSurface(surface_id_.Clone());
   client_->OnSurfaceIdAvailable(surface_id_.Clone());
   surface_size_ = size;
 }
@@ -145,6 +145,9 @@ void TextureUploader::OnContextLost() {
   LOG(FATAL) << "Context lost.";
 }
 
+void TextureUploader::SetIdNamespace(uint32_t id_namespace) {
+}
+
 void TextureUploader::ReturnResources(
     mojo::Array<mojo::ReturnedResourcePtr> resources) {
   if (!resources.size())