[inspector] correctly test more variants.

test/inspector/inspector-test.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if !defined(_WIN32) && !defined(_WIN64)
 #include <unistd.h>  // NOLINT
 #endif               // !defined(_WIN32) && !defined(_WIN64)
 
 #include <locale.h>
 
@@ skipping 651 matching lines @@
   FrontendChannelImpl frontend_channel(&frontend_runner);
   InspectorClientImpl inspector_client(&backend_runner, &frontend_channel,
                                        &ready_semaphore);
   ready_semaphore.Wait();
   UtilsExtension::set_inspector_client(&inspector_client);
 
   task_runners.push_back(&frontend_runner);
   task_runners.push_back(&backend_runner);
 
   for (int i = 1; i < argc; ++i) {
-    if (argv[i][0] == '-') break;
+    // Ignore unknown flags.
+    if (argv[i][0] == '-') continue;
 
     bool exists = false;
     v8::internal::Vector<const char> chars =
         v8::internal::ReadFile(argv[i], &exists, true);
     if (!exists) {
       fprintf(stderr, "Internal error: script file doesn't exists: %s\n",
               argv[i]);
       Exit();
     }
     frontend_runner.Append(new ExecuteStringTask(chars));
   }
 
   frontend_runner.Join();
   backend_runner.Join();
   return 0;
 }