Add base:: namespace to straggling string16s left in chrome/browser/ui.

R=msw@chromium.org
BUG=none
TEST=compile

Review URL: https://codereview.chromium.org/114883004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241220 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241220
Address a TODO to change some VLOGs to DVLOG after dogfood.

BUG=261871

Review URL: https://codereview.chromium.org/114973005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241221 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241221
dbus: Always return "not yet handled" for signals

BUG=327172

Review URL: https://codereview.chromium.org/115173002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241222 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241222