Enforce WARN_UNUSED_RESULT attribute on Windows

remoting/host/setup/daemon_controller_delegate_win.cc

 // Copyright 2013 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.
 
 #include "remoting/host/setup/daemon_controller_delegate_win.h"
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
+#include "base/macros.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "base/win/scoped_bstr.h"
 #include "base/win/windows_version.h"
 #include "remoting/base/scoped_sc_handle_win.h"
 #include "remoting/host/branding.h"
 #include "remoting/host/host_config.h"
 #include "remoting/host/usage_stats_consent.h"
 #include "remoting/host/win/security_descriptor.h"
 
@@ skipping 51 matching lines @@
   // Parse the JSON configuration, expecting it to contain a dictionary.
   scoped_ptr<base::Value> value =
       base::JSONReader::Read(file_content, base::JSON_ALLOW_TRAILING_COMMAS);
 
   base::DictionaryValue* dictionary;
   if (!value || !value->GetAsDictionary(&dictionary)) {
     LOG(ERROR) << "Failed to parse '" << filename.value() << "'.";
     return false;
   }
 
-  value.release();
+  ignore_result(value.release());
   config_out->reset(dictionary);
   return true;
 }
 
 base::FilePath GetTempLocationFor(const base::FilePath& filename) {
   return filename.ReplaceExtension(kTempFileExtension);
 }
 
 // Writes a config file to a temporary location.
 bool WriteConfigFileToTemp(const base::FilePath& filename,
@@ skipping 371 matching lines @@
   InvokeCompletionCallback(done, StartDaemon());
 }
 
 scoped_refptr<DaemonController> DaemonController::Create() {
   scoped_ptr<DaemonController::Delegate> delegate(
       new DaemonControllerDelegateWin());
   return new DaemonController(delegate.Pass());
 }
 
 }  // namespace remoting