[Sync] Move HttpBridge to sync/

sync/engine/net/server_connection_manager.h

Index: sync/engine/net/server_connection_manager.h
diff --git a/sync/engine/net/server_connection_manager.h b/sync/engine/net/server_connection_manager.h
index 4083ba23816eac9d683d878c197b3de701c42bb9..c61352e5a302c721675759880fc315a4c7b7090b 100644
--- a/sync/engine/net/server_connection_manager.h
+++ b/sync/engine/net/server_connection_manager.h
@@ -176,8 +176,7 @@ class ServerConnectionManager {
 
   ServerConnectionManager(const std::string& server,
                           int port,
-                          bool use_ssl,
-                          const std::string& user_agent);
+                          bool use_ssl);
 
   virtual ~ServerConnectionManager();
 
@@ -191,8 +190,6 @@ class ServerConnectionManager {
   void AddListener(ServerConnectionEventListener* listener);
   void RemoveListener(ServerConnectionEventListener* listener);
 
-  inline std::string user_agent() const { return user_agent_; }
-
   inline HttpResponse::ServerConnectionCode server_status() const {
     DCHECK(thread_checker_.CalledOnValidThread());
     return server_status_;
@@ -287,9 +284,6 @@ class ServerConnectionManager {
   // The unique id of the user's client.
   std::string client_id_;
 
-  // The user-agent string for HTTP.
-  std::string user_agent_;
-
   // Indicates whether or not requests should be made using HTTPS.
   bool use_ssl_;