Dart: Removes name conflicts from generated bindings.

sky/tests/resources/event-sender.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import "/sky/framework/embedder.dart";
 import "dart:async";
 import "dart:sky";
 import "dart:sky.internals" as internals;
 import "package:mojo/services/input_events/public/interfaces/input_event_constants.mojom.dart" as constants;
 import "package:mojo/services/input_events/public/interfaces/input_events.mojom.dart" as events;
@@ skipping 53 matching lines @@
   var harnessProxy = new harness.TestHarnessProxy.unbound();
   embedder.connectToService("mojo:sky_tester", harnessProxy);
   return harnessProxy;
 }
 
 final harness.TestHarnessProxy _harness = _init();
 
 // |0| should be EventFlags_NONE once its a compile-time constant.
 void keyDown(int keyCode, [int eventFlags = 0]) {
   if (!_chars.contains(keyCode)) {
-    _harness.dispatchInputEvent(
+    _harness.interface.dispatchInputEvent(
         new events.Event()
         ..action = constants.EventType_KEY_PRESSED
         ..flags = eventFlags
         ..keyData = (new events.KeyData()
                      ..keyCode = keyCode
                      ..windowsKeyCode = keyCode));
 
-    _harness.dispatchInputEvent(
+    _harness.interface.dispatchInputEvent(
         new events.Event()
         ..action = constants.EventType_KEY_PRESSED
         ..flags = eventFlags
         ..keyData = (new events.KeyData()
                      ..isChar = true
                      ..windowsKeyCode = keyCode));
   } else {
     ++_keyPressesRemaining;
-    _harness.dispatchInputEvent(
-        new events.Event()
+    _harness.interface.dispatchInputEvent(
+       new events.Event()
         ..action = constants.EventType_KEY_PRESSED
         ..flags = eventFlags
         ..keyData = (new events.KeyData()
                      ..keyCode = keyCode
                      ..isChar = true
                      ..character = keyCode
                      ..text = keyCode
                      ..unmodifiedText = keyCode));
   }
 }
 
 void done() {
   if (_isDone)
     throw "Already done.";
   _isDone = true;
   _checkComplete();
 }