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

components/safe_browsing/common/safebrowsing_switches.h

Index: components/safe_browsing/common/safebrowsing_switches.h
diff --git a/components/safe_browsing/common/safebrowsing_switches.h b/components/safe_browsing/common/safebrowsing_switches.h
new file mode 100644
index 0000000000000000000000000000000000000000..126795bbcf785c5292ccf234ece6ef05f26b618c
--- /dev/null
+++ b/components/safe_browsing/common/safebrowsing_switches.h
@@ -0,0 +1,19 @@
+// 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_SWITCHES_H_
+#define COMPONENTS_SAFE_BROWSING_COMMON_SAFEBROWSING_SWITCHES_H_
+
+namespace safe_browsing {
+namespace switches {
+
+extern const char kSbDisableAutoUpdate[];
+extern const char kSbDisableDownloadProtection[];
+extern const char kSbDisableExtensionBlacklist[];
+extern const char kSbManualDownloadBlacklist[];
+
+}  // namespace switches
+}  // namespace safe_browsing
+
+#endif  // COMPONENTS_SAFE_BROWSING_COMMON_SAFEBROWSING_SWITCHES_H_