Save actual break point location to script break point object.

test/mjsunit/debug-setbreakpoint.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 116 matching lines @@
 };
 
 // Add the debug event listener.
 Debug.setListener(listener);
 
 function f() {
   a=1
 };
 
 function g() {
+  // Comment.
   f();
 };
 
 eval('function h(){}');
 eval('function sourceUrlFunc() { a = 2; }\n//@ sourceURL=sourceUrlScript');
 
 o = {a:function(){},b:function(){}}
 
 // Check the script ids for the test functions.
 f_script_id = Debug.findScript(f).id;
@@ skipping 30 matching lines @@
 function breakListener(event) {
   if (event == Debug.DebugEvent.Break)
     breakListenerCalled = true;
 }
 
 Debug.setListener(breakListener);
 
 sourceUrlFunc();
 
 assertTrue(breakListenerCalled, "Break listener not called on breakpoint set by sourceURL");
+
+// Set a break point on a line with the comment, and check that actual position
+// is the next line after the comment.
+var number = Debug.setScriptBreakPointById(g_script_id, g_line + 1);
+assertEquals(g_line + 2, Debug.findBreakPoint(number).actual_location.line);