Sky: Add a Point class.

sky/engine/core/painting/Point.dart

Index: sky/engine/core/painting/Point.dart
diff --git a/build/android/pylib/remote/device/dummy/src/org/chromium/dummy/Dummy.java b/sky/engine/core/painting/Point.dart
similarity index 66%
copy from build/android/pylib/remote/device/dummy/src/org/chromium/dummy/Dummy.java
copy to sky/engine/core/painting/Point.dart
index 1281b39586e399c3103b5f2ab3ca1f3fab26d182..9fc7082e707bb0c3dc50d944b3848430d42b1c39 100644
--- a/build/android/pylib/remote/device/dummy/src/org/chromium/dummy/Dummy.java
+++ b/sky/engine/core/painting/Point.dart
@@ -2,8 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-package org.chromium.dummy;
+part of dart.sky;
 
-/** Does nothing. */
-class Dummy {}
+class Point {
+  double x;
+  double y;
+
+  Point(this.x, this.y);
+}