Fix SimpleCache field trial creation.

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/file_util.h"
 #include "base/metrics/field_trial.h"
 #include "base/stringprintf.h"
 #include "net/base/net_errors.h"
 #include "net/disk_cache/backend_impl.h"
 #include "net/disk_cache/cache_util.h"
@@ skipping 61 matching lines @@
       net_log_(net_log) {
   }
 
 CacheCreator::~CacheCreator() {
 }
 
 int CacheCreator::Run() {
   // TODO(pasko): The two caches should never coexist on disk. Each individual
   // cache backend should fail to initialize if it observes the index that does
   // not belong to it.
-  if (base::FieldTrialList::FindFullName("SimpleCacheTrial") == "Yes") {
+  const std::string experiment_name =
+      base::FieldTrialList::FindFullName("SimpleCacheTrial");
+  if (experiment_name == "ExplicitYes" || experiment_name == "ExperimentYes") {
     // TODO(gavinp,pasko): While simple backend development proceeds, we're only
     // testing it against net::DISK_CACHE. Turn it on for more cache types as
     // appropriate.
     if (type_ == net::DISK_CACHE) {
       disk_cache::SimpleBackendImpl* simple_cache =
           new disk_cache::SimpleBackendImpl(path_, max_bytes_, type_, thread_,
                                             net_log_);
       created_cache_ = simple_cache;
       return simple_cache->Init(
           base::Bind(&CacheCreator::OnIOComplete, base::Unretained(this)));
@@ skipping 62 matching lines @@
     *backend = disk_cache::MemBackendImpl::CreateBackend(max_bytes, net_log);
     return *backend ? net::OK : net::ERR_FAILED;
   }
   DCHECK(thread);
   CacheCreator* creator = new CacheCreator(path, force, max_bytes, type, kNone,
                                            thread, net_log, backend, callback);
   return creator->Run();
 }
 
 }  // namespace disk_cache