Make SimpleEntryImpl::Doom() completely asynchronous.

net/disk_cache/simple/simple_synchronous_entry.cc

Index: net/disk_cache/simple/simple_synchronous_entry.cc
diff --git a/net/disk_cache/simple/simple_synchronous_entry.cc b/net/disk_cache/simple/simple_synchronous_entry.cc
index d8e5148f98a2c7971d542a6fec6fde9e27fccc57..8dfa3634adb41ac2e8b8d949cb3463ec75c10de7 100644
--- a/net/disk_cache/simple/simple_synchronous_entry.cc
+++ b/net/disk_cache/simple/simple_synchronous_entry.cc
@@ -112,17 +112,6 @@ void SimpleSynchronousEntry::DoomEntry(
     callback_runner->PostTask(FROM_HERE, base::Bind(callback, net::OK));
 }
 
-void SimpleSynchronousEntry::DoomAndClose() {
-  scoped_refptr<TaskRunner> callback_runner = callback_runner_;
-  FilePath path = path_;
-  std::string key = key_;
-
-  Close();
-  // |this| is now deleted.
-
-  DoomEntry(path, key, callback_runner, net::CompletionCallback());
-}
-
 void SimpleSynchronousEntry::Close() {
   for (int i = 0; i < kSimpleEntryFileCount; ++i) {
     bool ALLOW_UNUSED result = ClosePlatformFile(files_[i]);