Enable sampling profiler in Chrome Debug Server

Summary:
Configure the runtime to allow use of the sampling profiler in the Chrome Debug Server.

Note: this does not actually start and stop the profiler; this change just makes the sampling profiler available to the runtime.

Changelog: [Internal]

Reviewed By: neildhar

Differential Revision: D39100833

fbshipit-source-id: 60d1f4e5ea2191fdf88b7f2e733557fa6128e205

ReactCommon/hermes/inspector/chrome/cli/main.cpp

@@ -213,7 +213,9 @@ static void runDebuggerLoop(
 
 static void runScript(const std::string &scriptSource, const std::string &url) {
   std::shared_ptr<fbhermes::HermesRuntime> runtime(
-      fbhermes::makeHermesRuntime());
+      fbhermes::makeHermesRuntime(::hermes::vm::RuntimeConfig::Builder()
+                                      .withEnableSampleProfiling(true)
+                                      .build()));
   auto adapter =
       std::make_unique<fbhermes::inspector::SharedRuntimeAdapter>(runtime);
   fbhermes::inspector::chrome::Connection conn(