base::Bind: Cleanup almost-unused OldCompletionCallbacks.

net/disk_cache/mem_backend_impl.cc

Index: net/disk_cache/mem_backend_impl.cc
diff --git a/net/disk_cache/mem_backend_impl.cc b/net/disk_cache/mem_backend_impl.cc
index a5165edb94ed5f5c9f0b960efa6264290b65173f..bd07af2c2007b44ca56bf423b861db39f55e6f76 100644
--- a/net/disk_cache/mem_backend_impl.cc
+++ b/net/disk_cache/mem_backend_impl.cc
@@ -152,13 +152,6 @@ int MemBackendImpl::DoomEntry(const std::string& key,
   return net::ERR_FAILED;
 }
 
-int MemBackendImpl::DoomAllEntries(OldCompletionCallback* callback) {
-  if (DoomAllEntries())
-    return net::OK;
-
-  return net::ERR_FAILED;
-}
-
 int MemBackendImpl::DoomAllEntries(const net::CompletionCallback& callback) {
   if (DoomAllEntries())
     return net::OK;
@@ -166,15 +159,6 @@ int MemBackendImpl::DoomAllEntries(const net::CompletionCallback& callback) {
   return net::ERR_FAILED;
 }
 
-int MemBackendImpl::DoomEntriesBetween(const base::Time initial_time,
-                                       const base::Time end_time,
-                                       OldCompletionCallback* callback) {
-  if (DoomEntriesBetween(initial_time, end_time))
-    return net::OK;
-
-  return net::ERR_FAILED;
-}
-
 int MemBackendImpl::DoomEntriesBetween(
     const base::Time initial_time, const base::Time end_time,
     const net::CompletionCallback& callback) {
@@ -193,14 +177,6 @@ int MemBackendImpl::DoomEntriesSince(const base::Time initial_time,
 }
 
 int MemBackendImpl::OpenNextEntry(void** iter, Entry** next_entry,
-                                  OldCompletionCallback* callback) {
-  if (OpenNextEntry(iter, next_entry))
-    return net::OK;
-
-  return net::ERR_FAILED;
-}
-
-int MemBackendImpl::OpenNextEntry(void** iter, Entry** next_entry,
                                   const net::CompletionCallback& callback) {
   if (OpenNextEntry(iter, next_entry))
     return net::OK;