Add recursive pattern matching for subfolders in file_enumerator.
FolderSearchPolicy parameter is added to FileEnumerator class.
MATCH_ONLY policy is default and refers to the current behaviour where
the pattern only mathces the contents of root_path, not files in
recursive subdirectories. ALL policy is the new fixed behaviour. It
matches pattern to all subdirecroties.
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.win:win10_chromium_x64_rel_ng
Review-Url: https://codereview.chromium.org/2892173003
Cr-Commit-Position: refs/heads/master@{#483920}
7 files changed
