spec for JSCSamplingProfiler (#24903)

Summary:
part of #24875.

## Changelog

[General] [Added] - Add TM spec for JSCSamplingProfiler
Pull Request resolved: https://github.com/facebook/react-native/pull/24903

Reviewed By: RSNara

Differential Revision: D15421649

Pulled By: fkgozali

fbshipit-source-id: 3d5a04a135aa7640495a0eb682b9c2300636db8e

Libraries/Performance/NativeJSCSamplingProfiler.js

@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+
+'use strict';
+
+import type {TurboModule} from 'RCTExport';
+import * as TurboModuleRegistry from 'TurboModuleRegistry';
+
+export interface Spec extends TurboModule {
+  +operationComplete: (token: number, result: ?string, error: ?string) => void;
+}
+
+export default TurboModuleRegistry.get<Spec>('JSCSamplingProfiler');

Libraries/Performance/SamplingProfiler.js

@@ -28,8 +28,11 @@ const SamplingProfiler = {
       error = e.toString();
     }
 
-    const {JSCSamplingProfiler} = require('../BatchedBridge/NativeModules');
-    JSCSamplingProfiler.operationComplete(token, result, error);
+    const NativeJSCSamplingProfiler = require('./NativeJSCSamplingProfiler')
+      .default;
+    if (NativeJSCSamplingProfiler) {
+      NativeJSCSamplingProfiler.operationComplete(token, result, error);
+    }
   },
 };