[chromeos] Remove dependencies of StatisticsProvider on chrome.

chromeos/chromeos_constants.h

Index: chromeos/chromeos_constants.h
diff --git a/chromeos/chromeos_constants.h b/chromeos/chromeos_constants.h
new file mode 100644
index 0000000000000000000000000000000000000000..48e0e9df1035583decab2c7102c44e44ac421c7b
--- /dev/null
+++ b/chromeos/chromeos_constants.h
@@ -0,0 +1,23 @@
+// Copyright 2013 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.
+
+// Constants related to ChromeOS.
+
+#ifndef CHROMEOS_CHROMEOS_CONSTANTS_H_
+#define CHROMEOS_CHROMEOS_CONSTANTS_H_
+
+#include "base/files/file_path.h"
+#include "chromeos/chromeos_export.h"
+
+namespace chromeos {
+
+CHROMEOS_EXPORT extern const base::FilePath::CharType kDriveCacheDirname[];
+CHROMEOS_EXPORT extern const char kOemDeviceRequisitionKey[];
+CHROMEOS_EXPORT extern const char kOemIsEnterpriseManagedKey[];
+CHROMEOS_EXPORT extern const char kOemCanExitEnterpriseEnrollmentKey[];
+CHROMEOS_EXPORT extern const char kOemKeyboardDrivenOobeKey[];
+
+}  // namespace chromeos
+
+#endif  // CHROMEOS_CHROMEOS_CONSTANTS_H_