Share recorded document upload reporting

src/paint_renderer/compositor.h

@@ -132,6 +132,13 @@ struct DocumentFrameUploadResult {
     std::uint64_t uploaded_bytes = 0;
 };
 
+struct RecordedDocumentFrameUploadResult {
+    DocumentFrameUploadResult upload {};
+    std::size_t command_count = 0;
+    std::size_t upload_command_count = 0;
+    std::size_t transition_command_count = 0;
+};
+
 [[nodiscard]] pp::foundation::Status composite_layer(
     std::span<pp::paint::Rgba> destination,
     pp::renderer::Extent2D extent,
@@ -147,6 +154,9 @@ struct DocumentFrameUploadResult {
     pp::renderer::IRenderDevice& device,
     DocumentFrameUploadRequest request);
 
+[[nodiscard]] pp::foundation::Result<RecordedDocumentFrameUploadResult> record_document_frame_upload(
+    DocumentFrameUploadRequest request);
+
 [[nodiscard]] bool stroke_composite_requires_feedback(
     pp::paint::BlendMode layer_blend_mode,
     pp::paint::StrokeBlendMode stroke_blend_mode,