Componentize safe_browsing [1]: create component, move messages, constants and switches.

components/safe_browsing/common/safebrowsing_constants.h

Index: components/safe_browsing/common/safebrowsing_constants.h
diff --git a/components/safe_browsing/common/safebrowsing_constants.h b/components/safe_browsing/common/safebrowsing_constants.h
new file mode 100644
index 0000000000000000000000000000000000000000..17173ccf7c02eb21ab93e3bf7b33a32e31531cf6
--- /dev/null
+++ b/components/safe_browsing/common/safebrowsing_constants.h
@@ -0,0 +1,16 @@
+// Copyright 2016 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 COMPONENTS_SAFE_BROWSING_COMMON_SAFEBROWSING_CONSTANTS_H_
+#define COMPONENTS_SAFE_BROWSING_COMMON_SAFEBROWSING_CONSTANTS_H_
+
+#include "base/files/file_path.h"
+
+namespace safe_browsing {
+
+extern const base::FilePath::CharType kSafeBrowsingBaseFilename[];
+
+}
+
+#endif  // COMPONENTS_SAFE_BROWSING_COMMON_SAFEBROWSING_CONSTANTS_H_