Don't demote top match for certain match types.

BUG=

Review URL: https://codereview.chromium.org/55413002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232979 0039d316-1c4b-4281-b951-d872f2087c98
drive: Use title recovered from trashed DB when DB corruption happens

Add ResourceMetadataStorage::RecoveredCacheInfo
Recover title in ResourceMetadataStorage::RecoverCacheInfoFromTrashedResourceMap
Use title in FileCache::RecoverFilesFromCacheDirectory

BUG=277333
TEST=unit_tests

Review URL: https://codereview.chromium.org/55713002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@232980 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 232979
SVN changes up to revision 232980