Support running in GitHub Actions

As part of the upstream workflow, we check out this repository within a subdirectory. This patch supports that scenario based on the `$CI` environment variable.

Author: mathiasbynens

prep-tot-protocol-files.sh

@@ -1,9 +1,14 @@
 #!/bin/bash
 set -x
 
-# Machine-specific path, naturally
 local_script_path="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-protocol_repo_path="$local_script_path/../devtools-protocol"
+if [ -n $CI ]; then
+  # https://github.com/ChromeDevTools/devtools-protocol/blob/HEAD/.github/workflows/update.yml
+  protocol_repo_path="$local_script_path/.."
+else
+  # Assume `devtools-protocol` lives alongside `debugger-protocol-viewer`.
+  protocol_repo_path="$local_script_path/../devtools-protocol"
+fi
 
 browser_protocol_path="$protocol_repo_path/json/browser_protocol.json"
 js_protocol_path="$protocol_repo_path/json/js_protocol.json"