Put getter functions on Script line-endings objects

src/messages.js

 // Copyright 2012 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.
 
 // -------------------------------------------------------------------
 
 var $errorToString;
 var $getStackTraceLine;
 var $messageGetPositionInLine;
 var $messageGetLineNumber;
@@ skipping 378 matching lines @@
  * @return {number}
  *     Number of source lines.
  */
 function ScriptLineCount() {
   // Return number of source lines.
   return this.line_ends.length;
 }
 
 
 /**
+ * Returns the position of the nth line end.
+ * @return {number}
+ *     Zero-based position of the nth line end in the script.
+ */
+function ScriptLineEnd(n) {
+  return this.line_ends[n];
+}
+
+
+/**
  * If sourceURL comment is available returns sourceURL comment contents.
  * Otherwise, script name is returned. See
  * http://fbug.googlecode.com/svn/branches/firebug1.1/docs/ReleaseNotes_1.1.txt
  * and Source Map Revision 3 proposal for details on using //# sourceURL and
  * deprecated //@ sourceURL comment to identify scripts that don't have name.
  *
  * @return {?string} script name if present, value for //# sourceURL or
  * deprecated //@ sourceURL comment otherwise.
  */
 function ScriptNameOrSourceURL() {
@@ skipping 10 matching lines @@
     "line_ends",
     "line_offset",
     "column_offset"
   ], [
     "lineFromPosition", ScriptLineFromPosition,
     "locationFromPosition", ScriptLocationFromPosition,
     "locationFromLine", ScriptLocationFromLine,
     "sourceSlice", ScriptSourceSlice,
     "sourceLine", ScriptSourceLine,
     "lineCount", ScriptLineCount,
-    "nameOrSourceURL", ScriptNameOrSourceURL
+    "nameOrSourceURL", ScriptNameOrSourceURL,
+    "lineEnd", ScriptLineEnd
   ]
 );
 
 
 /**
  * Class for source location. A source location is a position within some
  * source with the following properties:
  *   script   : script object for the source
  *   line     : source line number
  *   column   : source column within the line
@@ skipping 643 matching lines @@
   // Define accessors first, as this may fail and throw.
   ObjectDefineProperty(obj, 'stack', { get: StackTraceGetter,
                                        set: StackTraceSetter,
                                        configurable: true });
   %CollectStackTrace(obj, cons_opt ? cons_opt : captureStackTrace);
 };
 
 GlobalError.captureStackTrace = captureStackTrace;
 
 });