Keep only base/extractor.[cc|h].

client/client_metrics.cc

Index: client/client_metrics.cc
diff --git a/client/client_metrics.cc b/client/client_metrics.cc
deleted file mode 100644
index 3225110b42ab9ef204ffd1d84916c190acfa0d3b..0000000000000000000000000000000000000000
--- a/client/client_metrics.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2010 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-
-#include "omaha/client/client_metrics.h"
-
-namespace omaha {
-
-DEFINE_METRIC_count(client_another_install_in_progress);
-DEFINE_METRIC_count(client_another_update_in_progress);
-
-}  // namespace omaha