SyncFS: Implement Get{Normal/Low}PriorityDirtyTracker in MetadataDatabase


BUG=240165
TEST=n/a

Review URL: https://codereview.chromium.org/62883004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235705 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235705
[Clean up] Replace SearchTabHelper NAV_ENTRY_COMMITTED notification observer with WebContentsObserver::NavigationEntryCommitted().

BUG=272583,268984
TEST=none

Review URL: https://codereview.chromium.org/73013002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235706 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235706
Fixed two typos on chrome://sync-internals/.

BUG=319449

Review URL: https://codereview.chromium.org/73043002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235707 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235707
Remove dead code from IDB (chromium side)

BUG=
TBR=jam@chromium.org

Review URL: https://codereview.chromium.org/73153003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235708 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 235708