KCConsole.js

// This file consist of an excerpt copied from the Chromium project sample
// with several modifications

// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

function Console() {
}

Console.Type = {
    LOG: "log",
    DEBUG: "debug",
    INFO: "info",
    WARN: "warn",
    ERROR: "error",
    GROUP: "group",
    GROUP_COLLAPSED: "groupCollapsed",
    GROUP_END: "groupEnd"
};

Console.addMessage = function (type, format, args) {
    chrome.runtime.sendMessage({
        command: "sendToConsole",
        tabId: chrome.devtools.tabId,
        args: escape(JSON.stringify(Array.prototype.slice.call(arguments, 0)))
    });
};

// Generate Console output methods, i.e. Console.log(), Console.debug() etc.
(function () {
    var console_types = Object.getOwnPropertyNames(Console.Type);
    for (var type = 0; type < console_types.length; ++type) {
        var method_name = Console.Type[console_types[type]];
        Console[method_name] = Console.addMessage.bind(Console, method_name);
    }
})();