base::Bind: Cleanup almost-unused OldCompletionCallbacks.

net/disk_cache/backend_impl.cc

Index: net/disk_cache/backend_impl.cc
diff --git a/net/disk_cache/backend_impl.cc b/net/disk_cache/backend_impl.cc
index 1443f7faa7a8cf54355e06c90b36420942c449ca..2cc2f3a423e5d161c7ed3f2fb8ad1545fb13edcc 100644
--- a/net/disk_cache/backend_impl.cc
+++ b/net/disk_cache/backend_impl.cc
@@ -1395,12 +1395,6 @@ int BackendImpl::DoomEntry(const std::string& key,
   return net::ERR_IO_PENDING;
 }
 
-int BackendImpl::DoomAllEntries(OldCompletionCallback* callback) {
-  DCHECK(callback);
-  background_queue_.DoomAllEntries(callback);
-  return net::ERR_IO_PENDING;
-}
-
 int BackendImpl::DoomAllEntries(const net::CompletionCallback& callback) {
   DCHECK(!callback.is_null());
   background_queue_.DoomAllEntries(callback);
@@ -1409,14 +1403,6 @@ int BackendImpl::DoomAllEntries(const net::CompletionCallback& callback) {
 
 int BackendImpl::DoomEntriesBetween(const base::Time initial_time,
                                     const base::Time end_time,
-                                    OldCompletionCallback* callback) {
-  DCHECK(callback);
-  background_queue_.DoomEntriesBetween(initial_time, end_time, callback);
-  return net::ERR_IO_PENDING;
-}
-
-int BackendImpl::DoomEntriesBetween(const base::Time initial_time,
-                                    const base::Time end_time,
                                     const net::CompletionCallback& callback) {
   DCHECK(!callback.is_null());
   background_queue_.DoomEntriesBetween(initial_time, end_time, callback);
@@ -1431,13 +1417,6 @@ int BackendImpl::DoomEntriesSince(const base::Time initial_time,
 }
 
 int BackendImpl::OpenNextEntry(void** iter, Entry** next_entry,
-                               OldCompletionCallback* callback) {
-  DCHECK(callback);
-  background_queue_.OpenNextEntry(iter, next_entry, callback);
-  return net::ERR_IO_PENDING;
-}
-
-int BackendImpl::OpenNextEntry(void** iter, Entry** next_entry,
                                const net::CompletionCallback& callback) {
   DCHECK(!callback.is_null());
   background_queue_.OpenNextEntry(iter, next_entry, callback);