Rename ViewportObserver to SkyEngine

sky/services/viewport/viewport_observer.mojom

Index: sky/services/viewport/viewport_observer.mojom
diff --git a/sky/services/viewport/viewport_observer.mojom b/sky/services/viewport/viewport_observer.mojom
deleted file mode 100644
index 7983f7354ffc6433f09807289cd1e881d9d2832d..0000000000000000000000000000000000000000
--- a/sky/services/viewport/viewport_observer.mojom
+++ /dev/null
@@ -1,17 +0,0 @@
-// 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.
-
-module sky;
-
-import "sky/services/viewport/input_event.mojom";
-
-// TODO(eseidel): Rename this interface.
-interface ViewportObserver {
-  OnViewportMetricsChanged(int32 width, int32 height, float device_pixel_ratio);
-  OnInputEvent(InputEvent event);
-
-  RunFromNetwork(string url);
-  RunFromFile(string main, string package_root);
-  RunFromSnapshot(string path);
-};