Remove usage of to-be-deprecated APIs from samples

samples/hello-world.cc

Index: samples/hello-world.cc
diff --git a/samples/hello-world.cc b/samples/hello-world.cc
index c38c76022cd67ece2c2937bcf938a1a5a3f20441..8be5a31fca4a748eaa7d82010ad79bdf17d8e2a6 100644
--- a/samples/hello-world.cc
+++ b/samples/hello-world.cc
@@ -47,13 +47,15 @@ int main(int argc, char* argv[]) {
     Context::Scope context_scope(context);
 
     // Create a string containing the JavaScript source code.
-    Local<String> source = String::NewFromUtf8(isolate, "'Hello' + ', World!'");
+    Local<String> source =
+        String::NewFromUtf8(isolate, "'Hello' + ', World!'",
+                            NewStringType::kNormal).ToLocalChecked();
 
     // Compile the source code.
-    Local<Script> script = Script::Compile(source);
+    Local<Script> script = Script::Compile(context, source).ToLocalChecked();
 
     // Run the script to get the result.
-    Local<Value> result = script->Run();
+    Local<Value> result = script->Run(context).ToLocalChecked();
 
     // Convert the result to an UTF8 string and print it.
     String::Utf8Value utf8(result);