Add new DisconnectCause class to telecomm.

+ Add a hidden "UNKNOWN" default type to ToneGenerator.
- Hide the Telephony DisconnectCause from the public API.
+ Add a Telecomm DisconnectCause. This is parcelable, and contains
information (code, user facing message, non-user facing reason,
and tone) to help describe the disconnect state and what behaviors
an application can implement for the user experience. This reduces
the causes for a disconnect to a more generic set.
+ Lots of work to pipe this through. DisconnectCause replaces the
code and message which were formerly passed around.

Bug: 17241433
Bug: 17329632
Change-Id: I9d337e478a8784bcc0ade02267c2df52cac9bf17

telecomm/java/android/telecom/RemoteConnectionService.java

@@ -20,7 +20,6 @@ import android.net.Uri;
 import android.os.IBinder;
 import android.os.IBinder.DeathRecipient;
 import android.os.RemoteException;
-import android.telephony.DisconnectCause;
 
 import com.android.internal.telecom.IConnectionService;
 import com.android.internal.telecom.IConnectionServiceAdapter;
@@ -107,14 +106,13 @@ final class RemoteConnectionService {
         }
 
         @Override
-        public void setDisconnected(String callId, int disconnectCause,
-                String disconnectMessage) {
+        public void setDisconnected(String callId, DisconnectCause disconnectCause) {
             if (mConnectionById.containsKey(callId)) {
                 findConnectionForAction(callId, "setDisconnected")
-                        .setDisconnected(disconnectCause, disconnectMessage);
+                        .setDisconnected(disconnectCause);
             } else {
                 findConferenceForAction(callId, "setDisconnected")
-                        .setDisconnected(disconnectCause, disconnectMessage);
+                        .setDisconnected(disconnectCause);
             }
         }
 
@@ -351,8 +349,8 @@ final class RemoteConnectionService {
             });
             return connection;
         } catch (RemoteException e) {
-            return RemoteConnection
-                    .failure(DisconnectCause.ERROR_UNSPECIFIED, e.toString());
+            return RemoteConnection.failure(
+                    new DisconnectCause(DisconnectCause.ERROR, e.toString()));
         }
     }