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mcasas authoredFaceDetector.detect() in ToT returns a sequence<DetectedObject>, but DetectedObject doesn't exist, and it should return DetectedFace instead according to the Spec. Also, DetectedFace is not used at the moment (FaceDetector goes around this issue by returning DOMRects directly). This CL sorts that out by returning DetectedFaces directly. BUG=673075 Review-Url: https://codereview.chromium.org/2564123003 Cr-Commit-Position: refs/heads/master@{#437794} f1f5959f