Implement network create/destroy.

(cherry picked from commit 382fc20107aa38cca062f10b4bc05c47b6c7f191)

Change-Id: Id5f8df447d812c8e8cf03addbb5e70abdcdfceb9
diff --git a/PermissionsController.cpp b/PermissionsController.cpp
new file mode 100644
index 0000000..dc72229
--- /dev/null
+++ b/PermissionsController.cpp
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "PermissionsController.h"
+
+Permission PermissionsController::getPermissionForNetwork(unsigned netId) const {
+    std::map<unsigned, Permission>::const_iterator iter = mNetworks.find(netId);
+    return iter != mNetworks.end() ? iter->second : PERMISSION_NONE;
+}
+
+void PermissionsController::setPermissionForNetwork(unsigned netId, Permission permission) {
+    if (permission == PERMISSION_NONE) {
+        clearPermissionForNetwork(netId);
+        return;
+    }
+    mNetworks[netId] = permission;
+}
+
+void PermissionsController::clearPermissionForNetwork(unsigned netId) {
+    mNetworks.erase(netId);
+}