RemoteException: Add @throws documentation

Bug: 144792553
Test: Compiles
Change-Id: I5a7464c2fe786b8398c5abdf43f62479de62b133
diff --git a/core/java/android/os/RemoteException.java b/core/java/android/os/RemoteException.java
index 10ef279..98c66d1 100644
--- a/core/java/android/os/RemoteException.java
+++ b/core/java/android/os/RemoteException.java
@@ -44,6 +44,8 @@
      * state or making security decisions based on the perceived success or
      * failure of a call, or any default values returned. For this reason, we
      * want to strongly throw when there was trouble with the transaction.
+     *
+     * @throws RuntimeException
      */
     @NonNull
     public RuntimeException rethrowAsRuntimeException() {
@@ -60,6 +62,8 @@
      * state or making security decisions based on the perceived success or
      * failure of a call, or any default values returned. For this reason, we
      * want to strongly throw when there was trouble with the transaction.
+     *
+     * @throws RuntimeException
      */
     @NonNull
     public RuntimeException rethrowFromSystemServer() {