Update to follow internal impl.

Change-Id: I40cae53d7ae724c44c40fb7f21649e807416ae54
diff --git a/tests/src/com/android/browser/tests/utils/MockContentResolver2.java b/tests/src/com/android/browser/tests/utils/MockContentResolver2.java
index fab70db..4fed65a 100644
--- a/tests/src/com/android/browser/tests/utils/MockContentResolver2.java
+++ b/tests/src/com/android/browser/tests/utils/MockContentResolver2.java
@@ -94,6 +94,10 @@
         return releaseProvider(icp);
     }
 
+    /** @hide */
+    public void unstableProviderDied(IContentProvider icp) {
+    }
+
     @Override
     public void notifyChange(Uri uri, ContentObserver observer,
             boolean syncToNetwork) {