Add nacl-gdb-script switch.

chrome/browser/nacl_host/test/mock_nacl_gdb.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 <cstdio>
 #include <cstring>
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/process_util.h"
 
 static const char kArgs[] = "--args";
 static const char kEvalCommand[] = "--eval-command";
+static const char kCommand[] = "--command";
 static const char kNaClIrt[] = "nacl-irt ";
 static const char kPass[] = "PASS";
 static const char kDump[] = "dump binary value ";
 static const char kAttach[] = "attach ";
 
 // Send message to child nacl_helper
 void SendMessage(const char* arg) {
   const char* file_end = strchr(arg, ' ');
   CHECK(file_end);
   char buf = '\0';
@@ skipping 30 matching lines @@
       i += 2;
       // Command line shouldn't end with --eval-command switch without value.
       CHECK_LE(i, argc);
       if (strncmp(argv[i - 1], kDump, sizeof(kDump) - 1) == 0) {
         message_pipe = argv[i - 1] + sizeof(kDump) - 1;
       } else if (strncmp(argv[i - 1], kAttach, sizeof(kAttach) - 1) == 0) {
         has_attach_cmd = true;
       }
       continue;
     }
+    if (strcmp(argv[i], kCommand) == 0) {

[Mark Seaborn, 2012/05/24 17:25:58]

It looks to me that if no --command arg is provided, the test will still pass. 
There's no equivalent of has_attach_cmd in this case.

[halyavin, 2012/05/25 09:37:45]

Done.

+      // Command line shouldn't end with --command switch without value.
+      i += 2;
+      CHECK_LE(i, argc);
+      std::string nacl_gdb_script;
+      env->GetVar("NACL_GDB_SCRIPT", &nacl_gdb_script);
+      CHECK_EQ(strcmp(argv[i - 1], nacl_gdb_script.c_str()), 0);
+      continue;
+    }
     // Unknown argument.
     NOTREACHED() << "Invalid argument " << argv[i];
   }
   if (has_attach_cmd) {
     CHECK_EQ(i, argc);
     CHECK(message_pipe);
     // Test passed, so we can let NaCl launching to continue.
     SendMessage(message_pipe);
     return 0;
   }
   // --args switch must be present.
   CHECK_LT(i, argc);
 
   CommandLine::StringVector arguments;
   for (; i < argc; i++) {
     arguments.push_back(
         CommandLine::StringType(argv[i], argv[i] + strlen(argv[i])));
   }
   CommandLine cmd_line(arguments);
   // Process must be launched successfully.
   PCHECK(base::LaunchProcess(cmd_line, base::LaunchOptions(), NULL));
   return 0;
 }