function processToken(lineNumber, tokenValue, tokenType, column, newColumn)
        {
            if (tokenType && this._isIdentifier(tokenType) && valuesMap.get(tokenValue)) {
                var names = namesPerLine.get(lineNumber);
                if (!names) {
                    names = new Set();
                    namesPerLine.set(lineNumber, names);
                }
                names.add(tokenValue);
            }
        }
@param {number} lineNumber
@param {string} tokenValue
@param {?string} tokenType
@param {number} column
@param {number} newColumn
@this {WebInspector.JavaScriptSourceFrame}