Add warmup and sandbox file-read permission for testing

third_party/WebKit/Source/modules/shapedetection/FaceDetectorImplMac.h

+// Copyright 2016 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.
+#ifndef FaceDetectorImplMac_h
+#define FaceDetectorImplMac_h
+
+#import <QuartzCore/QuartzCore.h>
+
+#include "base/mac/scoped_nsobject.h"
+#include "modules/shapedetection/FaceDetectorImpl.h"
+
+namespace blink {
+
+class FaceDetectorImplMac : public FaceDetectorImpl {
+ public:
+  FaceDetectorImplMac();
+
+  HeapVector<Member<DOMRect>> detectFace(void* frame_addr,
+                                         int width,
+                                         int height) override;
+
+ private:
+  base::scoped_nsobject<CIDetector> detector_;
+  base::scoped_nsobject<CIContext> context_;
+};
+
+}  // namespace blink
+
+#endif  // FaceDetectorImplMac_h