tree f9e1b19e49593a446fb5a16033acfdedf855934c
parent 2d05f50f4059a6151f6183be5bac92cc7a43455f
author Youkichi Hosoi <youkichihosoi@google.com> 1637004297 +0900
committer Youkichi Hosoi <youkichihosoi@google.com> 1638423537 +0900

Avoid creating default folders inside StubVolumes

StubVolumes are managed from outside Android (e.g. from Chrome OS), and
thus default folders like Music, Movies, Pictures, etc. should not be
automatically created inside them.
This CL achieves it by skipping default folders creation in StubVolumes
at ensureDefaultFolders() and ensureThumbnailsValid(). Whether a given
volume is a StubVolume is decided by looking up the return value of
StorageVolume.isStub(), which is available in the SDK level T and above.

Bug: 206019156
Test: m

Change-Id: I7406f1b3eef545407f1c017f6e9cca0f8c280dc8