Dart: Refactors Proxies

examples/dart/camera_roll/lib/main.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.
 
 // This example makes use of mojo:camera_roll which is available only when
 // running on Android.
 //
 // Example usage:
 //   pub get
 //   pub run sky_tools build
@@ skipping 36 matching lines @@
 }
 
 void beginFrame(double timeStamp) {
   Rect paintBounds = new Rect.fromLTWH(0.0, 0.0, view.width, view.height);
   Picture picture = paint(paintBounds);
   Scene scene = composite(picture, paintBounds);
   view.scene = scene;
 }
 
 void getPhoto() {
-  var future = cameraRoll.ptr.getPhoto(photoIndex);
+  var future = cameraRoll.getPhoto(photoIndex);
   future.then((response) {
     if (response.photo == null) {
       print("Photo $photoIndex not found, returning to the first photo.");
-      cameraRoll.ptr.update();
+      cameraRoll.update();
       photoIndex = 0;
       getPhoto();
       return;
     }
 
     new ImageDecoder(response.photo.content.handle.h, (image) {
       if (image != null) {
         currentImage = image;
         print("view.scheduleFrame");
         view.scheduleFrame();
@@ skipping 15 matching lines @@
 
   return false;
 }
 
 void main() {
   embedder.connectToService("mojo:camera", cameraRoll);
   view.setFrameCallback(beginFrame);
   view.setEventCallback(handleEvent);
   getPhoto();
 }