SteamVR Performance Test features some beta Portal 2 content?

[Devteam5]

I've discovered on the Valve Cut Content Wiki that some of the early builds of the SteamVR performance test contains unused Portal 2 content that doesn't appear in the current game's files, like an FStop-colored version of the Portal Gun pedestal texture.
ValveTime UK also revealed an older rendition of Smooth Jazz, which was the song Together Again by Dave Koz.
And, according to SteamDB, there's a Source 2 conversion of every material and model from Portal 2.
I can't find this older build, and none of these are in the current one, so I was hoping somebody on here does, and/or can verify any of these.

[Devteam5]

Ok, so I found the files eventually on Valve Archive.
Only new thing I found in the Portal 2 directory is a Source 2 map called art_testroom. It's a source 2 map, so I can't really view it properly, but I opened it in the Source 2 Viewer, so I could see what it contained.
The map contains:
- Something called door_pedestal_removal_lvl2_0.
- Something called ball_trap
- A box dropper trigger
- An exit door
- Floor buttons
- Several unnamed models
- brush_gun_holder_lvl2_24
- Many world nodes
- Parts of a box dropper (might not be a full model)

In other news, I did find the Fstop pedestal texture, and couldn't find anything else new so far, but there's quite a lot of files to comb through, so it'll take me a bit.

[JS101]

only in aperature 

[theonlystudioblue]

Ok, so I found the files eventually on Valve Archive.
Only new thing I found in the Portal 2 directory is a Source 2 map called art_testroom. It's a source 2 map, so I can't really view it properly, but I opened it in the Source 2 Viewer, so I could see what it contained.
The map contains:
- Something called door_pedestal_removal_lvl2_0.
- Something called ball_trap
- A box dropper trigger
- An exit door
- Floor buttons
- Several unnamed models
- brush_gun_holder_lvl2_24
- Many world nodes
- Parts of a box dropper (might not be a full model)

In other news, I did find the Fstop pedestal texture, and couldn't find anything else new so far, but there's quite a lot of files to comb through, so it'll take me a bit.

I did some research, and "art_testroom" is the name of a test map from the original Portal meant to test puzzle elements.