decouple TelecomManager#getSelfManagedPhoneAccounts (2/3)

Recently TelecomManager#getSelfManagedPhoneAccounts was updated
to allow callingPackages to get their PA's.  However, API council
noted there was ambiguity with what was returned from the method.
Thus the method has been decoupled into 2 methods.

bug: 216640181
Test: CTS
Change-Id: Idbcb4740f5a5d7fdf5bedb9d9f6173eef0cb3f17
diff --git a/telecomm/java/android/telecom/TelecomManager.java b/telecomm/java/android/telecom/TelecomManager.java
index 1d06707..0bb1d73 100644
--- a/telecomm/java/android/telecom/TelecomManager.java
+++ b/telecomm/java/android/telecom/TelecomManager.java
@@ -1292,31 +1292,22 @@
     }
 
     /**
-     * Returns a list of {@link PhoneAccountHandle}s for self-managed {@link ConnectionService}s.
+     * Returns a list of {@link PhoneAccountHandle}s for all self-managed
+     * {@link ConnectionService}s owned by the calling {@link UserHandle}.
      * <p>
      * Self-Managed {@link ConnectionService}s have a {@link PhoneAccount} with
      * {@link PhoneAccount#CAPABILITY_SELF_MANAGED}.
      * <p>
      * Requires permission {@link android.Manifest.permission#READ_PHONE_STATE}, or that the caller
-     * is the default dialer app to get all phone account handles.
-     * <P>
-     * If the caller doesn't meet any of the above requirements and has {@link
-     * android.Manifest.permission#MANAGE_OWN_CALLS}, the caller can get only the phone account
-     * handles they have registered.
+     * is the default dialer app.
      * <p>
-     * A {@link SecurityException} will be thrown if the caller is not the default dialer
-     * or the caller does not have at least one of the following permissions:
-     * {@link android.Manifest.permission#READ_PHONE_STATE} permission,
-     * {@link android.Manifest.permission#MANAGE_OWN_CALLS} permission
+     * A {@link SecurityException} will be thrown if a called is not the default dialer, or lacks
+     * the {@link android.Manifest.permission#READ_PHONE_STATE} permission.
      *
      * @return A list of {@code PhoneAccountHandle} objects.
      */
-    @RequiresPermission(anyOf = {
-            READ_PRIVILEGED_PHONE_STATE,
-            android.Manifest.permission.READ_PHONE_STATE,
-            android.Manifest.permission.MANAGE_OWN_CALLS
-    })
-    public List<PhoneAccountHandle> getSelfManagedPhoneAccounts() {
+    @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE)
+    public @NonNull List<PhoneAccountHandle> getSelfManagedPhoneAccounts() {
         ITelecomService service = getTelecomService();
         if (service != null) {
             try {
@@ -1330,6 +1321,34 @@
     }
 
     /**
+     * Returns a list of {@link PhoneAccountHandle}s owned by the calling self-managed
+     * {@link ConnectionService}.
+     * <p>
+     * Self-Managed {@link ConnectionService}s have a {@link PhoneAccount} with
+     * {@link PhoneAccount#CAPABILITY_SELF_MANAGED}.
+     * <p>
+     * Requires permission {@link android.Manifest.permission#MANAGE_OWN_CALLS}
+     * <p>
+     * A {@link SecurityException} will be thrown if a caller lacks the
+     * {@link android.Manifest.permission#MANAGE_OWN_CALLS} permission.
+     *
+     * @return A list of {@code PhoneAccountHandle} objects.
+     */
+    @RequiresPermission(Manifest.permission.MANAGE_OWN_CALLS)
+    public @NonNull List<PhoneAccountHandle> getOwnSelfManagedPhoneAccounts() {
+        ITelecomService service = getTelecomService();
+        if (service != null) {
+            try {
+                return service.getOwnSelfManagedPhoneAccounts(mContext.getOpPackageName(),
+                        mContext.getAttributionTag());
+            } catch (RemoteException e) {
+                throw e.rethrowFromSystemServer();
+            }
+        }
+        throw new IllegalStateException("Telecom is not available");
+    }
+
+    /**
      * Returns a list of {@link PhoneAccountHandle}s including those which have not been enabled
      * by the user.
      *