How do I find a hidden shader?

To ensure that my asset bundles which contain terrains have the correct shaders I need to have the shaders loaded with the initial scene. Currently the only way found of doing this was to create a terrain in your main build scene but this adds to the initial download size. Therefore I want to see if just adding the shader to my resource will do the trivk but as its from the tree creator the shader is hidden. hidden/nature/bla

Anyone know?

P.S..this would all be solved if unity was able to capture all the terrain shader data when an assets bundle is created.

All the hidden build in shaders can be found here.