Add function for one-time stop at function entry

runtime/bin/main.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_debugger_api.h"
@@ skipping 527 matching lines @@
     char* dot = strchr(bpt_function, '.');
     if (dot == NULL) {
       class_name = DartUtils::NewString("");
       function_name = DartUtils::NewString(breakpoint_at);
     } else {
       *dot = '\0';
       class_name = DartUtils::NewString(bpt_function);
       function_name = DartUtils::NewString(dot + 1);
     }
     free(bpt_function);
-    Dart_Breakpoint bpt;
-    result = Dart_SetBreakpointAtEntry(
-                 library, class_name, function_name, &bpt);
+    result = Dart_OneTimeBreakAtEntry(library, class_name, function_name);
   }
   return result;
 }
 
 
 char* BuildIsolateName(const char* script_name,
                        const char* func_name) {
   // Skip past any slashes in the script name.
   const char* last_slash = strrchr(script_name, '/');
   if (last_slash != NULL) {
@@ skipping 159 matching lines @@
   Dart_ShutdownIsolate();
   // Terminate process exit-code handler.
   Process::TerminateExitCodeHandler();
   // Free copied argument strings if converted.
   if (argv_converted) {
     for (int i = 0; i < argc; i++) free(argv[i]);
   }
 
   return Process::GlobalExitCode();
 }