Remove traces of TracingCacheBackend

net/disk_cache/cache_creator.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/files/file_path.h"
 #include "base/metrics/field_trial.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "net/base/cache_type.h"
 #include "net/base/net_errors.h"
@@ skipping 104 matching lines @@
   int rv = new_cache->Init(
       base::Bind(&CacheCreator::OnIOComplete, base::Unretained(this)));
   DCHECK_EQ(net::ERR_IO_PENDING, rv);
   return rv;
 #endif
 }
 
 void CacheCreator::DoCallback(int result) {
   DCHECK_NE(net::ERR_IO_PENDING, result);
   if (result == net::OK) {
-#ifndef USE_TRACING_CACHE_BACKEND
     *backend_ = created_cache_.Pass();
-#else
-    *backend_.reset(
-        new disk_cache::TracingCacheBackend(created_cache_.Pass()));
-#endif
   } else {
     LOG(ERROR) << "Unable to create cache";
     created_cache_.reset();
   }
   callback_.Run(result);
   delete this;
 }
 
 // If the initialization of the cache fails, and |force| is true, we will
 // discard the whole cache and create a new one.
@@ skipping 41 matching lines @@
                                            backend_type,
                                            kNone,
                                            thread,
                                            net_log,
                                            backend,
                                            callback);
   return creator->Run();
 }
 
 }  // namespace disk_cache