Cleanup VersionInfo after componentization.

chrome/common/metrics/version_utils.h

 // Copyright 2015 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.
 
 #ifndef CHROME_COMMON_METRICS_VERSION_UTILS_H_
 #define CHROME_COMMON_METRICS_VERSION_UTILS_H_
 
 #include <string>
 
-#include "chrome/common/chrome_version_info.h"
 #include "components/metrics/proto/system_profile.pb.h"
 
+namespace version_info {
+enum class Channel;
+}
+
 namespace metrics {
 
 // Build a string including the Chrome app version, suffixed by "-64" on 64-bit
 // platforms, and "-devel" on developer builds.
 std::string GetVersionString();
 
 // Translates version_info::Channel to the equivalent
 // SystemProfileProto::Channel.
 SystemProfileProto::Channel AsProtobufChannel(
     version_info::Channel channel);
 
 }  // namespace metrics
 
 #endif  // CHROME_COMMON_METRICS_VERSION_UTILS_H_