code: function fillRemainingHolesAndMinimizeStyles(messages, i) {
    var html = messages[i].html;
    var frameHoles = messages[i].frameHoles;
    for (var index in frameHoles) {
      if (frameHoles.hasOwnProperty(index)) {
        var frameIndex = frameHoles[index];
        for (var j = 0; j < messages.length; j++) {
          if (messages[j].frameIndex == frameIndex) {
            fillRemainingHolesAndMinimizeStyles(messages, j);
            html[index] = messages[j].html.join('');
          }
        }
      }
    }
    minimizeStyles(messages[i]);
  }
docs: Fills all of the gaps in |messages[i].html|.
  
  @param {Array<Object>} messages The response from all of the injected content
  scripts.
  @param {number} i The index of messages to use.