base::Bind: Cleanup almost-unused OldCompletionCallbacks.

net/http/mock_http_cache.cc

Index: net/http/mock_http_cache.cc
diff --git a/net/http/mock_http_cache.cc b/net/http/mock_http_cache.cc
index 19c615492676881903b4799712fd0ede277c0493..5fe148ebddf7a4ce460d75175a7fae446dfc3d02 100644
--- a/net/http/mock_http_cache.cc
+++ b/net/http/mock_http_cache.cc
@@ -438,22 +438,12 @@ int MockDiskCache::DoomEntry(const std::string& key,
   return net::ERR_IO_PENDING;
 }
 
-int MockDiskCache::DoomAllEntries(net::OldCompletionCallback* callback) {
-  return net::ERR_NOT_IMPLEMENTED;
-}
-
 int MockDiskCache::DoomAllEntries(const net::CompletionCallback& callback) {
   return net::ERR_NOT_IMPLEMENTED;
 }
 
 int MockDiskCache::DoomEntriesBetween(const base::Time initial_time,
                                       const base::Time end_time,
-                                      net::OldCompletionCallback* callback) {
-  return net::ERR_NOT_IMPLEMENTED;
-}
-
-int MockDiskCache::DoomEntriesBetween(const base::Time initial_time,
-                                      const base::Time end_time,
                                       const net::CompletionCallback& callback) {
   return net::ERR_NOT_IMPLEMENTED;
 }
@@ -464,11 +454,6 @@ int MockDiskCache::DoomEntriesSince(const base::Time initial_time,
 }
 
 int MockDiskCache::OpenNextEntry(void** iter, disk_cache::Entry** next_entry,
-                                 net::OldCompletionCallback* callback) {
-  return net::ERR_NOT_IMPLEMENTED;
-}
-
-int MockDiskCache::OpenNextEntry(void** iter, disk_cache::Entry** next_entry,
                                  const net::CompletionCallback& callback) {
   return net::ERR_NOT_IMPLEMENTED;
 }