it tried a fresh install ubuntu mate 15.10 on my rpi2. chromium 49.0.2623.87-0ubuntu0.15.10.1.1222 crashes with:
[4845:4845:0322/111406:ERROR:sandbox_linux.cc(334)] InitializeSandbox() called with multiple threads in process gpu-process
forced down to 45.0.2454 works but gives ssl certificate error on https sites.