chmod +x scripts/test/run_e2e.py
chmod +x scripts/test/run_e2e.py

So that it's consistent with the other test runners.

R=8915f5d5c39a08c5a3e8a8d7314756e4580816f9@chromium.org

Change-Id: I8be3664055d1ad398f0633ea17815d325ea0b560
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2042618
Reviewed-by: Paul Lewis <8915f5d5c39a08c5a3e8a8d7314756e4580816f9@chromium.org>
Commit-Queue: Yang Guo <1cf0af8245a3a17a632a2c73531392b0f9761c76@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend