Sublime Text3でブラウザを開くためのショートカットキーを設定する方法

[
    {
        "keys": ["f1"],
        "command": "side_bar_files_open_with",
        "args": {
            "application": "D:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe",
            "extensions": ".*",
            "paths": []
        }
    },
    {
        "keys": ["f2"],
        "command": "side_bar_files_open_with",
        "args": {
            "application": "C:\\Users\\delll\\AppData\\Local\\Google\\Chrome\\Application\\chrome.exe",
            "extensions": ".*",
            "paths": []
        }
    },
    {
        "keys": ["f5"],
        "command": "side_bar_files_open_with",
        "args": {
            "application": "C:\\Program Files\\Internet Explorer\\iexplore.exe",
            "extensions": ".*",
            "paths": []
        }
    }
]