Make reloadSources service RPC public

runtime/observatory/tests/service/reload_sources_test.dart

+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+// VMOptions=--error_on_bad_type --error_on_bad_override
+
+import 'package:observatory/service_io.dart';
+import 'package:unittest/unittest.dart';
+import 'test_helper.dart';
+import 'dart:developer';
+import 'service_test_common.dart';
+
+testMain() {
+  debugger();  // Stop here.
+  print('1');
+  while (true) {
+  }
+}
+
+var tests = [
+  // Stopped at 'debugger' statement.
+  hasStoppedAtBreakpoint,
+  // Reload sources and request to pause post reload. The pause request will be
+  // ignored because we are already paused at a breakpoint.
+  reloadSources(true),
+  // Ensure that we are still stopped at a breakpoint.
+  hasStoppedAtBreakpoint,
+  // Resume the isolate into the while loop.
+  resumeIsolate,
+  // Reload sources and request to pause post reload. The pause request will
+  // be respected because we are not already paused.
+  reloadSources(true),
+  // Ensure that we are paused post reload request.
+  hasStoppedPostRequest,
+  // Resume the isolate.
+  resumeIsolate,
+  // Verify that it is running.
+  isolateIsRunning,
+  // Reload sources and do not request to pause post reload.
+  reloadSources(false),
+  // Verify that it is running.
+  isolateIsRunning,
+];
+
+main(args) => runIsolateTests(args, tests, testeeConcurrent: testMain);