Leaving the version block at the top of the PDL file (#16448)

* Leaving the version block at the top of pdl file

Author: diemol

scripts/update_cdp.py

@@ -65,9 +65,12 @@ def old_chrome(chrome_milestone):
 
 
 def flatten_browser_pdl(file_path, chrome_version):
- """Fetches all included domain .pdl files and concatenates them."""
+ """Preserves the version block and concatenates all included domain .pdl files."""
  with open(file_path, "r") as file:
  content = file.read()
+ # Extract version block
+ version_match = re.search(r"(version\s+major\s+\d+\s+minor\s+\d+)", content)
+ version_block = version_match.group(1) + "\n\n" if version_match else ""
  # Find all include lines
  includes = re.findall(r"include domains/([A-Za-z0-9_]+\.pdl)", content)
  base_url = f"https://raw.githubusercontent.com/chromium/chromium/{chrome_version}/third_party/blink/public/devtools_protocol/domains/"
@@ -76,9 +79,9 @@ def flatten_browser_pdl(file_path, chrome_version):
  url = base_url + domain_file
  response = http.request("GET", url)
  concatenated += response.data.decode("utf-8") + "\n"
- # Overwrite the file with concatenated domains
+ # Overwrite the file with version block + concatenated domains
  with open(file_path, "w") as file:
- file.write(concatenated)
+ file.write(version_block + concatenated)
 
 
 def add_pdls(chrome_milestone):