Add 2nd constructor for backwards compatibility.

Review by: jat@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9290 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/user/src/com/google/gwt/user/server/rpc/RPCRequest.java b/user/src/com/google/gwt/user/server/rpc/RPCRequest.java
index d673500..22d09a1 100644
--- a/user/src/com/google/gwt/user/server/rpc/RPCRequest.java
+++ b/user/src/com/google/gwt/user/server/rpc/RPCRequest.java
@@ -55,6 +55,14 @@
    * Construct an RPCRequest.
    */
   public RPCRequest(Method method, Object[] parameters,
+      SerializationPolicy serializationPolicy, int flags) {
+    this(method, parameters, null, serializationPolicy, flags);
+  }
+
+  /**
+   * Construct an RPCRequest.
+   */
+  public RPCRequest(Method method, Object[] parameters,
       RpcToken rpcToken, SerializationPolicy serializationPolicy, int flags) {
     this.method = method;
     this.parameters = parameters;