Set the user agent for 0.6

blimp/client/core/settings/user_agent.h

Index: blimp/client/core/settings/user_agent.h
diff --git a/blimp/client/app/user_agent.h b/blimp/client/core/settings/user_agent.h
similarity index 73%
rename from blimp/client/app/user_agent.h
rename to blimp/client/core/settings/user_agent.h
index 4fa7f9115b0ac0c83926615275d21f50515a045f..e01246bc4293587f8ec9c19fba4ef6e738c6222c 100644
--- a/blimp/client/app/user_agent.h
+++ b/blimp/client/core/settings/user_agent.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef BLIMP_CLIENT_APP_USER_AGENT_H_
-#define BLIMP_CLIENT_APP_USER_AGENT_H_
+#ifndef BLIMP_CLIENT_CORE_SETTINGS_USER_AGENT_H_
+#define BLIMP_CLIENT_CORE_SETTINGS_USER_AGENT_H_
 
 #include <string>
 
@@ -17,4 +17,4 @@ std::string GetOSVersionInfoForUserAgent();
 
 }  // namespace blimp
 
-#endif  // BLIMP_CLIENT_APP_USER_AGENT_H_
+#endif  // BLIMP_CLIENT_CORE_SETTINGS_USER_AGENT_H_