sql: Remove completed TODO.

Change-Id: Ic1fbc244161497ef64acea02eca5bd795ba693db
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1529585
Auto-Submit: Staphany Park <staphany@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Commit-Queue: Staphany Park <staphany@chromium.org>
Cr-Commit-Position: refs/heads/master@{#642355}

sql/database.h

@@ -59,10 +59,6 @@ class DatabaseTestPeer;
 //
 // Instances of this class are thread-unsafe and DCHECK that they are accessed
 // on the same sequence.
-//
-// TODO(pwnall): This should be renamed to Database. Class instances are
-// typically named "db_" / "db", and the class' equivalents in other systems
-// used by Chrome are named LevelDB::DB and blink::IDBDatabase.
 class COMPONENT_EXPORT(SQL) Database {
  private:
   class StatementRef;  // Forward declaration, see real one below.