Don't try to read notifications state from sync DB

We no longer want to store notifications data in the sync DB.  Previous
patches have implemented a new storage system, but left in place some
code to ensure backwards compatibility.  That was almost a year ago.
It's now safe to remove the barckwards compatibility code.

This commit removes all support for reading notifications state from the
sync DB.  It also removes some tests and related functions.

This commit does not remove any data from the DB itself.  That would
require a migration, which we will implement in a different commit.
We'll also need one more commit to deprecate the histograms.

BUG=124140

Review URL: https://chromiumcodereview.appspot.com/12087010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@179247 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 4 deletions

diff --git a/sync/notifier/non_blocking_invalidator_unittest.cc b/sync/notifier/non_blocking_invalidator_unittest.cc
index 05d9f63..c6ddf0f 100644
--- a/sync/notifier/non_blocking_invalidator_unittest.cc
+++ b/sync/notifier/non_blocking_invalidator_unittest.cc
@@ -84,10 +84,6 @@ class NonBlockingInvalidatorTestDelegate {
     invalidator_->OnIncomingInvalidation(invalidation_map, source);
   }
 
-  static bool InvalidatorHandlesDeprecatedState() {
-    return true;
-  }
-
  private:
   MessageLoop message_loop_;
   base::Thread io_thread_;