title: Can't change default download directory for Remote Chrome in Ruby + Webdriver
body: <p>I want to use Chrome in my Test on Webdriver + Ruby to download files on remote computers. 
  On my developer computer everything works fine with this code: </p>
  
  <pre><code>profile = Selenium::WebDriver::Chrome::Profile.new
  profile['download.prompt_for_download'] = false
  profile['download.default_directory'] = Settings::DEFAULT_DOWNLOAD_DIRECTORY
  @@driver = Selenium::WebDriver.for :chrome, :profile =&gt; profile
  </code></pre>
  
  <p>But I want to use run code on several remote machines and use this code</p>
  
  <pre><code>profile = Selenium::WebDriver::Chrome::Profile.new
  profile['download.prompt_for_download'] = false
  profile['download.default_directory'] = "/mnt/samba/share_location/"
  caps = Selenium::WebDriver::Remote::Capabilities.chrome(:profile =&gt; profile)
  @@driver = Selenium::WebDriver.for(:remote, :url =&gt; "http://" +remote_server + ":4444/wd/hub", :desired_capabilities =&gt; caps)
  </code></pre>
  
  <p>Second variant didn't working, browser download file to default download loaction on each remote computer</p>
  
  <p>Please, help me to fix this</p>