Rename various Proxy classes. Provide a Proxy interface.

tests/stub-generator/src/MintMakerPromiseWithStubsTest-generatedTest.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // IsolateStubs=MintMakerPromiseWithStubsTest.dart:Mint,Purse
 
 #import("../../isolate/src/TestFramework.dart");
 
 /* class = Mint (tests/stub-generator/src/MintMakerPromiseWithStubsTest.dart/MintMakerPromiseWithStubsTest.dart: 9) */
 
 interface Mint$Proxy {
   Purse$Proxy createPurse(int balance);
 }
 
-class Mint$ProxyImpl extends Proxy implements Mint$Proxy {
+class Mint$ProxyImpl extends ProxyImpl implements Mint$Proxy {
   Mint$ProxyImpl(Promise<SendPort> port) : super.forReply(port) { }
   Mint$ProxyImpl.forIsolate(Proxy isolate) : super.forReply(isolate.call([null])) { }
   factory Mint$ProxyImpl.createIsolate() {
     Proxy isolate = new Proxy.forIsolate(new Mint$Dispatcher$Isolate());
     return new Mint$ProxyImpl.forIsolate(isolate);
   }
   factory Mint$ProxyImpl.localProxy(Mint obj) {
     return new Mint$ProxyImpl(new Promise<SendPort>.fromValue(Dispatcher.serve(new Mint$Dispatcher(obj))));
   }
 
@@ skipping 36 matching lines @@
 /* class = Purse (tests/stub-generator/src/MintMakerPromiseWithStubsTest.dart/MintMakerPromiseWithStubsTest.dart: 17) */
 
 interface Purse$Proxy {
   Promise<int> queryBalance();
 
   Purse$Proxy sproutPurse();
 
   Promise<int> deposit(int amount, Purse$Proxy source);
 }
 
-class Purse$ProxyImpl extends Proxy implements Purse$Proxy {
+class Purse$ProxyImpl extends ProxyImpl implements Purse$Proxy {
   Purse$ProxyImpl(Promise<SendPort> port) : super.forReply(port) { }
   Purse$ProxyImpl.forIsolate(Proxy isolate) : super.forReply(isolate.call([null])) { }
   factory Purse$ProxyImpl.createIsolate() {
     Proxy isolate = new Proxy.forIsolate(new Purse$Dispatcher$Isolate());
     return new Purse$ProxyImpl.forIsolate(isolate);
   }
   factory Purse$ProxyImpl.localProxy(Purse obj) {
     return new Purse$ProxyImpl(new Promise<SendPort>.fromValue(Dispatcher.serve(new Purse$Dispatcher(obj))));
   }
 
@@ skipping 148 matching lines @@
         });
     });
     expect.succeeded();
   }
 
 }
 
 main() {
   runTests([MintMakerPromiseWithStubsTest.testMain]);
 }