Web MIDI: regression bug fix

The send thread should start iff the thread is not running.
Accidentally, the condition was reversed :(

BUG=326888

Review URL: https://codereview.chromium.org/107513007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239710 0039d316-1c4b-4281-b951-d872f2087c98
[SyncFS] Split out folder creation sequence to separate class

Preparation of app-root create-create conflict handling to share the implementation.

BUG=240165
R=kinuko@chromium.org, nhiroki@chromium.org

Review URL: https://codereview.chromium.org/110113004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239711 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239711
Automated Commit: Committing new LKGM version 5080.0.0 for chromeos.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239712 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239712