win: crashpad_handler should create its own pipe name in ephemeral mode

handler/win/crashy_test_program.cc

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 94 matching lines @@
     if (!client.StartHandler(base::FilePath(argv[1]),
                              base::FilePath(argv[2]),
                              std::string(),
                              std::map<std::string, std::string>(),
                              std::vector<std::string>(),
                              false)) {
       LOG(ERROR) << "StartHandler";
       return EXIT_FAILURE;
     }
   } else {
-    fprintf(stderr, "Usage: %s <server_pipe_name>\n", argv[0]);
-    fprintf(stderr, "       %s <handler_path> <database_path>\n", argv[0]);
+    fprintf(stderr, "Usage: %ls <server_pipe_name>\n", argv[0]);
+    fprintf(stderr, "       %ls <handler_path> <database_path>\n", argv[0]);
     return EXIT_FAILURE;
   }
 
   if (!client.UseHandler()) {
     LOG(ERROR) << "UseHandler";
     return EXIT_FAILURE;
   }
 
   AllocateMemoryOfVariousProtections();
 
   if (InitializeCriticalSectionWithDebugInfoIfPossible(
           &g_test_critical_section)) {
     EnterCriticalSection(&g_test_critical_section);
   }
 
   SomeCrashyFunction();
 
   return EXIT_SUCCESS;
 }
 
 }  // namespace
 }  // namespace crashpad
 
 int wmain(int argc, wchar_t* argv[]) {
   return crashpad::CrashyMain(argc, argv);
 }