Tests for cloud policy UMA metrics.

chrome/browser/policy/user_policy_token_cache.cc

 // Copyright (c) 2011 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 "chrome/browser/policy/user_policy_token_cache.h"
 
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/policy/enterprise_metrics.h"
 #include "chrome/browser/policy/proto/device_management_local.pb.h"
@@ skipping 102 matching lines @@
     LOG(WARNING) << "Failed to create directory "
                  << cache_file_.DirName().value();
     SampleUMA(kMetricTokenStoreFailed);
     return;
   }
 
   int size = data.size();
   if (file_util::WriteFile(cache_file_, data.c_str(), size) != size) {
     LOG(WARNING) << "Failed to write " << cache_file_.value();
     SampleUMA(kMetricTokenStoreFailed);
+    return;
   }
 
   SampleUMA(kMetricTokenStoreSucceeded);
 }
 
 UserPolicyTokenCache::UserPolicyTokenCache(
     CloudPolicyDataStore* data_store,
     const FilePath& cache_file)
     : ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)),
       data_store_(data_store) {
@@ skipping 28 matching lines @@
 
     token_ = new_token;
     loader_->Store(new_token, data_store_->device_id());
   }
 }
 
 void UserPolicyTokenCache::OnCredentialsChanged() {
 }
 
 }  // namespace policy