Adding ContentProvider#refresh and ContentResolver#refresh.

Original CL is from ag/1568530.

Bug: 31647485
Change-Id: Ib45fc995a361b8c75cd3600f638910b18a263d51
diff --git a/bridge/src/com/android/layoutlib/bridge/android/BridgeContentProvider.java b/bridge/src/com/android/layoutlib/bridge/android/BridgeContentProvider.java
index e4cbb2f..3471165 100644
--- a/bridge/src/com/android/layoutlib/bridge/android/BridgeContentProvider.java
+++ b/bridge/src/com/android/layoutlib/bridge/android/BridgeContentProvider.java
@@ -145,4 +145,10 @@
     public Uri uncanonicalize(String callingPkg, Uri uri) throws RemoteException {
         return null;
     }
+
+    @Override
+    public boolean refresh(String callingPkg, Uri url, Bundle args,
+                    ICancellationSignal cancellationSignal) throws RemoteException {
+        return false;
+    }
 }