Merge "Provide link to android experimental flags API"

packages/NetworkStack/AndroidManifest.xml

@@ -30,7 +30,7 @@
     <uses-permission android:name="android.permission.INTERACT_ACROSS_USERS" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.READ_PRIVILEGED_PHONE_STATE" />
-
+    <uses-permission android:name="android.permission.READ_DEVICE_CONFIG" />
     <!-- Signature permission defined in NetworkStackStub -->
     <uses-permission android:name="android.permission.MAINLINE_NETWORK_STACK" />
     <application>

packages/NetworkStack/src/android/net/util/NetworkStackUtils.java

@@ -17,6 +17,7 @@
 package android.net.util;
 
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.util.SparseArray;
 
 import java.io.FileDescriptor;
@@ -81,4 +82,19 @@ public class NetworkStackUtils {
         }
         return false;
     }
+
+    /**
+     * Look up the value of a property for a particular namespace from {@link DeviceConfig}.
+     * @param namespace The namespace containing the property to look up.
+     * @param name The name of the property to look up.
+     * @param defaultValue The value to return if the property does not exist or has no non-null
+     *                     value.
+     * @return the corresponding value, or defaultValue if none exists.
+     */
+    @Nullable
+    public static String getDeviceConfigProperty(@NonNull String namespace, @NonNull String name,
+            @Nullable String defaultValue) {
+        // TODO: Link to DeviceConfig API once it is ready.
+        return defaultValue;
+    }
 }