Adding icudtl download

Author: Thibault Brocherieux

example/simpleDemo/embedderDownloader.go

@@ -244,31 +244,38 @@ func main() {
     }
 
 	var platform = "undefined"
-    var downloadURL = ""
+    var downloadShareLibraryURL = ""
+    downloadIcudtlURL := fmt.Sprintf("https://storage.googleapis.com/flutter_infra/flutter//%s/artifacts.zip",platform)
 
     // Retrieve the OS and set variable to retrieve correct flutter embedder
     switch runtime.GOOS {
     case "darwin":
         platform = "darwin-x64"
-        downloadURL = fmt.Sprintf("https://storage.googleapis.com/flutter_infra/flutter/%s/%s/FlutterEmbedder.framework.zip", hashResponse.Items[0].Sha, platform)
-
+        downloadShareLibraryURL = fmt.Sprintf("https://storage.googleapis.com/flutter_infra/flutter/%s/%s/FlutterEmbedder.framework.zip", hashResponse.Items[0].Sha, platform)
     case "linux":
         platform = "linux-x64"
-        downloadURL = fmt.Sprintf("https://storage.googleapis.com/flutter_infra/flutter/%s/%s/%s-embedder", hashResponse.Items[0].Sha, platform, platform)
+        downloadShareLibraryURL = fmt.Sprintf("https://storage.googleapis.com/flutter_infra/flutter/%s/%s/%s-embedder", hashResponse.Items[0].Sha, platform, platform)
 
     case "windows":
         platform = "windows-x64"
-        downloadURL = fmt.Sprintf("https://storage.googleapis.com/flutter_infra/flutter/%s/%s/%s-embedder", hashResponse.Items[0].Sha, platform, platform)
+        downloadShareLibraryURL = fmt.Sprintf("https://storage.googleapis.com/flutter_infra/flutter/%s/%s/%s-embedder", hashResponse.Items[0].Sha, platform, platform)
 
     default:
         log.Fatal("OS not supported")
     }
 
-    err3 := downloadFile(dir + "/.build/temp.zip", downloadURL)
-    if err3 != nil {
+    err3 := downloadFile(dir + "/.build/temp.zip", downloadShareLibraryURL)
+    if err != nil {
         log.Fatal(err3)
     } else{
-        fmt.Printf("Downloaded embedder for %s platform, matching version : %s\n", platform, hashResponse.Items[0].Sha)
+        fmt.Printf("Downloaded share library for %s platform, matching version : %s\n", platform, hashResponse.Items[0].Sha)
+    }
+
+    err4 := downloadFile(dir + "/.build/artifact.zip", downloadIcudtlURL)
+    if err != nil {
+        log.Fatal(err4)
+    } else{
+        fmt.Printf("Downloaded artifact for %s platform.")
     }
 
     _, err = unzip(".build/temp.zip", dir + "/.build/")