Update ProjectDownloaderStub

Author: adazem009

src/internal/projectdownloaderstub.cpp

@@ -22,6 +22,10 @@ void ProjectDownloaderStub::cancel()
 {
 }
 
+void ProjectDownloaderStub::setDownloadProgressCallback(const std::function<void(unsigned int, unsigned int)> &)
+{
+}
+
 const std::string &ProjectDownloaderStub::json() const
 {
     static const std::string empty;

src/internal/projectdownloaderstub.h

@@ -16,6 +16,8 @@ class ProjectDownloaderStub : public IProjectDownloader
         bool downloadAssets(const std::vector<std::string> &) override;
         void cancel() override;
 
+        virtual void setDownloadProgressCallback(const std::function<void(unsigned int, unsigned int)> &) override;
+
         const std::string &json() const override;
         const std::vector<std::string> &assets() const override;
         unsigned int downloadedAssetCount() const override;