Check for chromium/src

Make sure the script alwyas downloads Chromium
if there's no current download. This case can happen
if a user is removing the 'src' folder but doesn't know
to remove the .last_sync_chromium file.

TESTED=Renamed chromium/src and ran a sync keeping the .last_sync_chromium file, verified it started downloading.

Review URL:

git-svn-id: 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/ b/
index 9d2c05b..1f66a71 100755
--- a/
+++ b/
@@ -75,7 +75,8 @@
-  if os.path.exists(flag_file):
+  if (os.path.exists(os.path.join(opts.chromium_dir, 'src')) and
+      os.path.exists(flag_file)):
     with open(flag_file, 'r') as f:
       if == flag_file_content:
         print 'Chromium already up to date: ', opts.target_revision