Technological advances in electron microscopy allowed the separation of the Chromista from the Plantae kingdom. Indeed, the chloroplast of the chromists is located in the lumen of the endoplasmic reticulum instead of in the cytosol.
To use the bundled Flash Player plug-in, add --enable-internal-flash to your command line or shortcut for starting Google Chrome. To enable the integrated Adobe Flash Player for Google Chrome, enter chrome://eula/FlashPlayer in the address bar, then click Accept and Enable button.
For the time being Unity Web Player support can be re-enabled by pasting this into your chrome address bar: This should take you directly to the correct Chrome setting. Click to enable it and restart your browser. If this doesn't work you may have to empty your browser cache as well. This isn't a dangerous thing to do, it just enables NPAPI-support as it was before you upgraded to Chrome version 42. Now the Unity Web Player should work just like before.