cros: Explicitly enable accelerator on login screen.

This is required now after r230349.

BUG=310722
TEST=OobeTest.Accelerator

Review URL: https://codereview.chromium.org/37003006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230603 0039d316-1c4b-4281-b951-d872f2087c98
Media Galleries API: Fix Picasa PlatformFile leak.

Also investigated the iapps leak reported by the bug. Doesn't look like there's a leak. Probably got fixed incidentally.

BUG=264388

Review URL: https://codereview.chromium.org/37883003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230604 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230603
SVN changes up to revision 230604