Reuse the global DeviceManagementService for the AutoEnrollmentClient.

This simple cleanup wasn't possible when the AutoEnrollmentClient was first
introduced, but there's no reason to create a second DeviceManagementService
there.

BUG=None

Review URL: https://codereview.chromium.org/24582002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225495 0039d316-1c4b-4281-b951-d872f2087c98
[FileAPI] Fix path handling on ResolveLocalFileSystemURL.

BUG=298169

Review URL: https://codereview.chromium.org/24584003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225496 0039d316-1c4b-4281-b951-d872f2087c98
Fix memory leak uncovered by https://codereview.chromium.org/23587004

Merge internal change: 51569066

BUG=280931
R=rtenneti@chromium.org
TBR=rtenneti@chromium.org

Review URL: https://codereview.chromium.org/23748002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225497 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 225496
SVN changes up to revision 225497