GitLab

When MyFilesVolume is enabled and the its volume is already mounted
|GetDownloadsFolderForProfile| was returning actually MyFiles path
instead of MyFiles/Downloads path, this CL fixes this.

Bug: 873539
Change-Id: I099f788a6d067dce4857a6b4946808559799b45d
Reviewed-on: https://chromium-review.googlesource.com/c/1352070Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#611504}