Remove unused ColoredWindowController/DesktopBackgroundFadeController

BUG=none
TBR=antrim@chromium.org

Review URL: https://codereview.chromium.org/99783005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238353 0039d316-1c4b-4281-b951-d872f2087c98
[SyncFileSystem] Add MetadataDatabase::TryNoSideEffectActivation

This is needed to handle create-create conflict of folders in LocalToRemoteSyncer.

BUG=240165
NOTRY=true

Review URL: https://codereview.chromium.org/99813005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238354 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238354
[Files.app] Skip non file manager window in checking existing file manager instance

BUG=318551, 251070
TEST=manually tested

Review URL: https://codereview.chromium.org/99703002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238355 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238355