Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

Tests/LottieMetalMacTest/MacSources/AppDelegate.swift

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+// Copyright 2017 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import Cocoa
+
+@NSApplicationMain
+@objc(AppDelegate)
+class AppDelegate: NSObject, NSApplicationDelegate {}

Tests/LottieMetalMacTest/MacSources/ViewController.swift

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+import Cocoa
+
+@objc(ViewController)
+class ViewController: NSViewController {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+
+        self.view.layer?.backgroundColor = NSColor.blue.cgColor
+    }
+}
+