Change RouteController from free functions/members to class functions.

In a future change, this will make it more explicit which bits of
state (e.g., locks) are part of the class and which are not.

Test: netd_{unit,integration}_test passes
Change-Id: Iff5a202cdcb26a7b6039dd95655cc2c26592fc36
diff --git a/server/RouteController.h b/server/RouteController.h
index d13ea58..b01e283 100644
--- a/server/RouteController.h
+++ b/server/RouteController.h
@@ -20,6 +20,7 @@
 #include "NetdConstants.h"
 #include "Permission.h"
 
+#include <map>
 #include <sys/types.h>
 #include <linux/netlink.h>
 
@@ -97,6 +98,29 @@
     // For testing.
     static int (*iptablesRestoreCommandFunction)(IptablesTarget, const std::string&,
                                                  const std::string&, std::string *);
+
+private:
+    friend class RouteControllerTest;
+
+    static std::map<std::string, uint32_t> sInterfaceToTable;
+
+    static int configureDummyNetwork();
+    static int flushRoutes(const char* interface);
+    static int flushRoutes(uint32_t table);
+    static uint32_t getRouteTableForInterface(const char *interface);
+    static int modifyDefaultNetwork(uint16_t action, const char* interface, Permission permission);
+    static int modifyPhysicalNetwork(unsigned netId, const char* interface, Permission permission,
+                                     bool add);
+    static int modifyRoute(uint16_t action, const char* interface, const char* destination,
+                           const char* nexthop, TableType tableType);
+    static int modifyTetheredNetwork(uint16_t action, const char* inputInterface,
+                                     const char* outputInterface);
+    static int modifyVpnFallthroughRule(uint16_t action, unsigned vpnNetId,
+                                        const char* physicalInterface, Permission permission);
+    static int modifyVirtualNetwork(unsigned netId, const char* interface,
+                                    const UidRanges& uidRanges, bool secure, bool add,
+                                    bool modifyNonUidBasedRules);
+    static void updateTableNamesFile();
 };
 
 // Public because they are called by by RouteControllerTest.cpp.