Merge "CallAttributes.equals does deep check"
diff --git a/api/current.txt b/api/current.txt
index c386819..22e29c1 100755
--- a/api/current.txt
+++ b/api/current.txt
@@ -43606,9 +43606,9 @@
   }
 
   public interface GroupCallCallback {
-    method public void onBroadcastSignalStrengthUpdated(@IntRange(from=0xffffffff, to=4) int);
-    method public void onError(int, @Nullable String);
-    method public void onGroupCallStateChanged(int, int);
+    method public default void onBroadcastSignalStrengthUpdated(@IntRange(from=0xffffffff, to=4) int);
+    method public default void onError(int, @Nullable String);
+    method public default void onGroupCallStateChanged(int, int);
     field public static final int SIGNAL_STRENGTH_UNAVAILABLE = -1; // 0xffffffff
   }
 
@@ -43666,10 +43666,10 @@
   }
 
   public interface MbmsGroupCallSessionCallback {
-    method public void onAvailableSaisUpdated(@NonNull java.util.List<java.lang.Integer>, @NonNull java.util.List<java.util.List<java.lang.Integer>>);
-    method public void onError(int, @Nullable String);
-    method public void onMiddlewareReady();
-    method public void onServiceInterfaceAvailable(@NonNull String, int);
+    method public default void onAvailableSaisUpdated(@NonNull java.util.List<java.lang.Integer>, @NonNull java.util.List<java.util.List<java.lang.Integer>>);
+    method public default void onError(int, @Nullable String);
+    method public default void onMiddlewareReady();
+    method public default void onServiceInterfaceAvailable(@NonNull String, int);
   }
 
   public class MbmsStreamingSessionCallback {
diff --git a/telephony/java/android/telephony/mbms/GroupCallCallback.java b/telephony/java/android/telephony/mbms/GroupCallCallback.java
index 77e36bb..603f4e6 100644
--- a/telephony/java/android/telephony/mbms/GroupCallCallback.java
+++ b/telephony/java/android/telephony/mbms/GroupCallCallback.java
@@ -57,7 +57,7 @@
      * @param errorCode The error code.
      * @param message A human-readable message generated by the middleware for debugging purposes.
      */
-    void onError(@GroupCallError int errorCode, @Nullable String message);
+    default void onError(@GroupCallError int errorCode, @Nullable String message) {}
 
     /**
      * Called to indicate this call has changed state.
@@ -65,8 +65,8 @@
      * See {@link GroupCall#STATE_STOPPED}, {@link GroupCall#STATE_STARTED}
      * and {@link GroupCall#STATE_STALLED}.
      */
-    void onGroupCallStateChanged(@GroupCall.GroupCallState int state,
-            @GroupCall.GroupCallStateChangeReason int reason);
+    default void onGroupCallStateChanged(@GroupCall.GroupCallState int state,
+            @GroupCall.GroupCallStateChangeReason int reason) {}
 
     /**
      * Broadcast Signal Strength updated.
@@ -78,5 +78,6 @@
      * {@link #SIGNAL_STRENGTH_UNAVAILABLE} if broadcast is not available
      * for this call due to timing, geography or popularity.
      */
-    void onBroadcastSignalStrengthUpdated(@IntRange(from = -1, to = 4) int signalStrength);
+    default void onBroadcastSignalStrengthUpdated(
+            @IntRange(from = -1, to = 4) int signalStrength) {}
 }
diff --git a/telephony/java/android/telephony/mbms/MbmsGroupCallSessionCallback.java b/telephony/java/android/telephony/mbms/MbmsGroupCallSessionCallback.java
index 04e7ba1..ac7e172 100644
--- a/telephony/java/android/telephony/mbms/MbmsGroupCallSessionCallback.java
+++ b/telephony/java/android/telephony/mbms/MbmsGroupCallSessionCallback.java
@@ -57,7 +57,7 @@
      * @param errorCode The error code.
      * @param message A human-readable message generated by the middleware for debugging purposes.
      */
-    void onError(@GroupCallError int errorCode, @Nullable String message);
+    default void onError(@GroupCallError int errorCode, @Nullable String message) {}
 
     /**
      * Indicates that the list of currently available SAIs has been updated. The app may use this
@@ -70,8 +70,8 @@
      * @param availableSais A list of lists of available SAIS in neighboring cells, where each list
      *                      contains the available SAIs in an individual cell.
      */
-    void onAvailableSaisUpdated(@NonNull List<Integer> currentSais,
-            @NonNull List<List<Integer>> availableSais);
+    default void onAvailableSaisUpdated(@NonNull List<Integer> currentSais,
+            @NonNull List<List<Integer>> availableSais) {}
 
     /**
      * Called soon after the app calls {@link MbmsGroupCallSession#create}. The information supplied
@@ -85,7 +85,7 @@
      * @param interfaceName The interface name for the data link.
      * @param index The index for the data link.
      */
-    void onServiceInterfaceAvailable(@NonNull String interfaceName, int index);
+    default void onServiceInterfaceAvailable(@NonNull String interfaceName, int index) {}
 
     /**
      * Called to indicate that the middleware has been initialized and is ready.
@@ -95,5 +95,5 @@
      * delivered via {@link #onError(int, String)} with error code
      * {@link MbmsErrors.GeneralErrors#ERROR_MIDDLEWARE_NOT_YET_READY}.
      */
-    void onMiddlewareReady();
+    default void onMiddlewareReady() {}
 }