If you use the google drive desktop application on Windows, and want to launch your Google Docs, Sheets, etc. from explorer - then this could help.

GoogleDocsLauncher.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.IO;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace GoogleDocsLauncher
{
  class Program
  {
    static void Main(string[] args)
    {
      if (args.Length == 0)
      {
        Console.WriteLine("No file specified");
        return;
      }
      else
      {
        Console.WriteLine(args[0]);
      }

      String sChrome = String.Format(@"{0}\Google\Chrome\Application\chrome.exe", ProgramFilesx86());
      String sUrl = GetUrl(args[0]);
      System.Diagnostics.Process.Start(sChrome, sUrl);
    }

    private static string ProgramFilesx86()
    {
      if (8 == IntPtr.Size
          || (!String.IsNullOrEmpty(Environment.GetEnvironmentVariable("PROCESSOR_ARCHITEW6432"))))
      {
        return Environment.GetEnvironmentVariable("ProgramFiles(x86)");
      }

      return Environment.GetEnvironmentVariable("ProgramFiles");
    }

    private static String GetUrl(String Filename)
    {
      string json = String.Empty;

      if (! File.Exists(Filename))
      {
        Console.WriteLine("Specified File Doesn't Exist!: {0}", Filename);
        return String.Empty;
      }

      using (StreamReader r = new StreamReader(Filename))
      {
        json = r.ReadToEnd();
      }

      if (! String.IsNullOrEmpty(json))
      {
        dynamic stuff = JObject.Parse(json);
        return stuff.url;
      }

      return String.Empty;
    }
  }
}

Requires Newtonsoft.Json, and assumes you're using the Chrome Webbrowser.