title: Install Chrome extension automatically
body: <p>I've written a NPAPI plugin and I want to implement an NSIS installer that can install the plugin automatically.</p>
  
  <p>I've googled a lot and found that from Chrome browser v25, *.crx package installation using the Windows registry does not work any more(the installed extension will be disabled by default). It seems that 
  Google does not allow any automatic extension installations without being approved by user.</p>
  
  <p>However, I also found that if I install the plugin dll (instead of crx) on user's local machine and write reg keys to 
  HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MozillaPlugins\@myplugin.com/myplugin with correct dll path, the plugin could be installed automatically as long as my user downloaded and executed my installer, without any notification that the new plugin was going to be installed.</p>
  
  <p>My question is that why my installer works? Is it in contradiction with Google's policy?
  Shouldn't all the plugins installed under HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\MozillaPlugins be blocked or disabled by default?</p>