Revert "feat: upgrade to Chromium 68.0.3440.128 and Node 10.11.0 (#14677)" (#14963)

This reverts commit e012801420.

build/args/all.gn

@@ -9,8 +9,3 @@ enable_cdm_host_verification = false
 enable_extensions = false
 proprietary_codecs = true
 ffmpeg_branding = "Chrome"
-
-# TODO(jeremy): OSR is broken in M68. Remove this once it's fixed.
-enable_osr = false
-
-is_cfi = false

build/zip.py

@@ -56,13 +56,14 @@ def execute(argv):
 
 def main(argv):
   dist_zip, runtime_deps, target_cpu, target_os = argv
-  dist_files = set()
+  dist_files = []
   with open(runtime_deps) as f:
     for dep in f.readlines():
       dep = dep.strip()
-      dist_files.add(dep)
+      if dep not in dist_files:
+        dist_files += [dep]
   if sys.platform == 'darwin':
-    execute(['zip', '-r', '-y', dist_zip] + list(dist_files))
+    mac_zip_results = execute(['zip', '-r', '-y', dist_zip] + dist_files)
   else:
     with zipfile.ZipFile(dist_zip, 'w', zipfile.ZIP_DEFLATED) as z:
       for dep in dist_files: