Add WARN_UNUSED_RESULT to bool EmbeddedTestServer::Start()

net/test/embedded_test_server/embedded_test_server.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_TEST_EMBEDDED_TEST_SERVER_EMBEDDED_TEST_SERVER_H_
 #define NET_TEST_EMBEDDED_TEST_SERVER_EMBEDDED_TEST_SERVER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 115 matching lines @@
 
   // Sets a connection listener, that would be notified when various connection
   // events happen. May only be called before the server is started. Caller
   // maintains ownership of the listener.
   void SetConnectionListener(EmbeddedTestServerConnectionListener* listener);
 
   // Initializes and waits until the server is ready to accept requests.
   // This is the equivalent of calling InitializeAndListen() followed by
   // StartAcceptingConnections().
   // Returns whether a listening socket has been successfully created.
-  bool Start();
+  bool Start() WARN_UNUSED_RESULT;
 
   // Starts listening for incoming connections but will not yet accept them.
   // Returns whether a listening socket has been succesfully created.
   bool InitializeAndListen() WARN_UNUSED_RESULT;
 
   // Starts the Accept IO Thread and begins accepting connections.
   void StartAcceptingConnections();
 
   // Shuts down the http server and waits until the shutdown is complete.
   bool ShutdownAndWaitUntilComplete() WARN_UNUSED_RESULT;
@@ skipping 143 matching lines @@
 };
 
 }  // namespace test_server
 
 // TODO(svaldez): Refactor EmbeddedTestServer to be in the net namespace.
 using test_server::EmbeddedTestServer;
 
 }  // namespace net
 
 #endif  // NET_TEST_EMBEDDED_TEST_SERVER_EMBEDDED_TEST_SERVER_H_