doc change: In fundamentals doc, make statement about synchronous execution of RPC less strict. Indicate that FLAG_ONEWAY applies only across processes.

Bug: 2554090
Change-Id: Ia13b3d156d230609e8296a3b31c2882ba13681f3

core/java/android/os/IBinder.java

@@ -112,7 +112,8 @@ public interface IBinder {
     /**
      * Flag to {@link #transact}: this is a one-way call, meaning that the
      * caller returns immediately, without waiting for a result from the
-     * callee.
+     * callee. Applies only if the caller and callee are in different
+     * processes.
      */
     int FLAG_ONEWAY             = 0x00000001;
     

docs/html/guide/topics/fundamentals.jd

@@ -990,8 +990,8 @@ the RPC interface itself.
 </p>
 
 <p>
-An RPC interface can include only methods.
-All methods are executed synchronously (the local method blocks until the 
+An RPC interface can include only methods. By default,
+all methods are executed synchronously (the local method blocks until the
 remote method finishes), even if there is no return value.
 </p>