[tools] Add support for ref archive type

This will allow us to avoid packaging cctest into official archives, while still
keeeping them around for refbuilds. As a result, official archives will become a
lot smaller.

Corresponding recipe change: https://crrev.com/c/1517881

R=machenbach@chromium.org, tmrts@chromium.org

Bug: v8:8969
Change-Id: Icf67d2f6dd5dc4d4a4f32f9b5c5ef21758410546
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1517880
Commit-Queue: Sergiy Belozorov <sergiyb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60193}

tools/release/filter_build_files.py

@@ -23,6 +23,12 @@ import sys
 
 EXECUTABLE_FILES = [
   'd8',
+  # TODO(sergiyb): Remove cctest from there after infra-side CL lands.
+  'cctest',
+]
+
+# Additional executable files added only to ref archive type.
+REFBUILD_EXECUTABLE_FILES = [
   'cctest',
 ]
 
@@ -52,7 +58,7 @@ def main(argv):
                       help='Path to an output file. The files will '
                            'be stored in json list with absolute paths.')
   parser.add_argument('-t', '--type',
-                      choices=['all', 'exe', 'lib'], default='all',
+                      choices=['all', 'exe', 'lib', 'ref'], default='all',
                       help='Specifies the archive type.')
   args = parser.parse_args()
 
@@ -61,8 +67,8 @@ def main(argv):
 
   args.dir = os.path.abspath(args.dir)
 
-  # Skip libraries for exe archive type.
-  if args.type == 'exe':
+  # Skip libraries for exe and ref archive types.
+  if args.type in ('exe', 'ref'):
     library_files = []
   else:
     library_files = LIBRARY_FILES[args.platform]
@@ -73,6 +79,9 @@ def main(argv):
   else:
     executable_files = EXECUTABLE_FILES
 
+  if args.type == 'ref':
+    executable_files.extend(REFBUILD_EXECUTABLE_FILES)
+
   list_of_files = []
   def add_files_from_globs(globs):
     list_of_files.extend(itertools.chain(*map(glob.iglob, globs)))