code: function _findInProject(functionName) {
          var result = new $.Deferred();
  
          PerfUtils.markStart(PerfUtils.JAVASCRIPT_FIND_FUNCTION);
  
          function _nonBinaryFileFilter(file) {
              return !LanguageManager.getLanguageForPath(file.fullPath).isBinary();
          }
  
          ProjectManager.getAllFiles(_nonBinaryFileFilter)
              .done(function (files) {
                  JSUtils.findMatchingFunctions(functionName, files)
                      .done(function (functions) {
                          PerfUtils.addMeasurement(PerfUtils.JAVASCRIPT_FIND_FUNCTION);
                          result.resolve(functions);
                      })
                      .fail(function () {
                          PerfUtils.finalizeMeasurement(PerfUtils.JAVASCRIPT_FIND_FUNCTION);
                          result.reject();
                      });
              })
              .fail(function () {
                  result.reject();
              });
  
          return result.promise();
      }
docs: @private
  For unit and performance tests. Allows lookup by function name instead of editor offset
  without constructing an inline editor.
  
  @param {!string} functionName
  @return {$.Promise} a promise that will be resolved with an array of function offset information