Address comments

Author: bdero

shell/platform/embedder/embedder_external_view.cc

@@ -89,7 +89,7 @@ bool EmbedderExternalView::Render(const EmbedderRenderTarget& render_target) {
   if (impeller_target.has_value()) {
     auto aiks_context = render_target.GetAiksContext();
 
-    DisplayListBuilder dl_builder;
+    auto dl_builder = DisplayListBuilder();
     dl_builder.SetTransform(&surface_transformation_);
     slice_->render_into(&dl_builder);
 

shell/platform/embedder/embedder_render_target.cc

@@ -34,7 +34,7 @@ EmbedderRenderTarget::EmbedderRenderTarget(
     FML_DCHECK(aiks_context_);
     FML_DCHECK(!render_surface_);
   } else {
-    FML_CHECK(render_surface_);
+    FML_DCHECK(render_surface_);
   }
 }
 

shell/platform/embedder/embedder_surface_metal_impeller.mm

@@ -59,11 +59,7 @@
   return valid_;
 }
 
-std::unique_ptr<Surface> EmbedderSurfaceMetalImpeller::CreateGPUSurface() API_AVAILABLE(ios(13.0)) {
-  if (@available(iOS 13.0, *)) {
-  } else {
-    return nullptr;
-  }
+std::unique_ptr<Surface> EmbedderSurfaceMetalImpeller::CreateGPUSurface() {
   if (!IsValid()) {
     return nullptr;
   }