Ensure syncer::internal::GetComputerName returns a UTF-8 string.

sync/util/get_session_name.cc

 // 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.
 
 #include "sync/util/get_session_name.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/location.h"
+#include "base/strings/string_util.h"
 #include "base/sys_info.h"
 #include "base/task_runner.h"
 
 #if defined(OS_LINUX)
 #include "sync/util/get_session_name_linux.h"
 #elif defined(OS_IOS)
 #include "sync/util/get_session_name_ios.h"
 #elif defined(OS_MACOSX)
 #include "sync/util/get_session_name_mac.h"
 #elif defined(OS_WIN)
@@ skipping 25 matching lines @@
   session_name = internal::GetComputerName();
 #elif defined(OS_ANDROID)
   base::android::BuildInfo* android_build_info =
       base::android::BuildInfo::GetInstance();
   session_name = android_build_info->model();
 #endif
 
   if (session_name == "Unknown" || session_name.empty())
     session_name = base::SysInfo::OperatingSystemName();
 
+  DCHECK(base::IsStringUTF8(session_name));
   return session_name;
 }
 
 void FillSessionName(std::string* session_name) {
   *session_name = GetSessionNameSynchronously();
 }
 
 void OnSessionNameFilled(
     const base::Callback<void(const std::string&)>& done_callback,
     std::string* session_name) {
@@ skipping 13 matching lines @@
       base::Bind(&OnSessionNameFilled,
                  done_callback,
                  base::Owned(session_name)));
 }
 
 std::string GetSessionNameSynchronouslyForTesting() {
   return GetSessionNameSynchronously();
 }
 
 }  // namespace syncer