[devtools] _parseMap in SourceMap.js does not strictly follow specs

third_party/WebKit/Source/devtools/front_end/sdk/SourceMap.js

 /*
  * Copyright (C) 2012 Google Inc. 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
@@ skipping 439 matching lines @@
                 continue;
             }
 
             var sourceIndexDelta = this._decodeVLQ(stringCharIterator);
             if (sourceIndexDelta) {
                 sourceIndex += sourceIndexDelta;
                 sourceURL = sources[sourceIndex];
             }
             sourceLineNumber += this._decodeVLQ(stringCharIterator);
             sourceColumnNumber += this._decodeVLQ(stringCharIterator);
-            if (!this._isSeparator(stringCharIterator.peek()))
-                nameIndex += this._decodeVLQ(stringCharIterator);
 
+            if (!stringCharIterator.hasNext() || this._isSeparator(stringCharIterator.peek())) {
+                this._mappings.push(new WebInspector.SourceMapEntry(lineNumber, columnNumber, sourceURL, sourceLineNumber, sourceColumnNumber));
+                continue;
+            }
+
+            nameIndex += this._decodeVLQ(stringCharIterator);
             this._mappings.push(new WebInspector.SourceMapEntry(lineNumber, columnNumber, sourceURL, sourceLineNumber, sourceColumnNumber, names[nameIndex]));
         }
 
         for (var i = 0; i < this._mappings.length; ++i) {
             var mapping = this._mappings[i];
             var url = mapping.sourceURL;
             if (!url)
                 continue;
             if (!this._reverseMappingsBySourceURL.has(url))
                 this._reverseMappingsBySourceURL.set(url, []);
@@ skipping 94 matching lines @@
     },
 
     /**
      * @return {boolean}
      */
     hasNext: function()
     {
         return this._position < this._string.length;
     }
 }