DevTools: Make TextEditor.tokenAtTextPosition() return exclusive end column

Source/devtools/front_end/source_frame/CodeMirrorTextEditor.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 716 matching lines @@
      */
     tokenAtTextPosition: function(lineNumber, column)
     {
         if (lineNumber < 0 || lineNumber >= this._codeMirror.lineCount())
             return null;
         var token = this._codeMirror.getTokenAt(new CodeMirror.Pos(lineNumber, (column || 0) + 1));
         if (!token || !token.type)
             return null;
         return {
             startColumn: token.start,
-            endColumn: token.end - 1,
+            endColumn: token.end,
             type: token.type
         };
     },
 
     /**
      * @param {!WebInspector.TextRange} textRange
      * @return {string}
      */
     copyRange: function(textRange)
     {
@@ skipping 1658 matching lines @@
     var backgroundColorRule = backgroundColor ? ".CodeMirror .CodeMirror-selected { background-color: " + backgroundColor + ";}" : "";
     var foregroundColor = InspectorFrontendHost.getSelectionForegroundColor();
     var foregroundColorRule = foregroundColor ? ".CodeMirror .CodeMirror-selectedtext:not(.CodeMirror-persist-highlight) { color: " + foregroundColor + "!important;}" : "";
     if (!foregroundColorRule && !backgroundColorRule)
         return;
 
     var style = document.createElement("style");
     style.textContent = backgroundColorRule + foregroundColorRule;
     document.head.appendChild(style);
 })();