Add AndroidVideoSurfaceChooser to manage overlays.

media/gpu/content_video_view_overlay_factory.h

+// Copyright 2017 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 MEDIA_GPU_CONTENT_VIDEO_VIEW_OVERLAY_FACTORY_H_
+#define MEDIA_GPU_CONTENT_VIDEO_VIEW_OVERLAY_FACTORY_H_
+
+#include "media/base/android/android_overlay_factory.h"
+
+namespace media {
+
+// Factory for CVV-based overlays.  One needs this only to hide the factory
+// impl from AVDA.
+class ContentVideoViewOverlayFactory : public AndroidOverlayFactory {
+ public:
+  // |surface_id| must not be kNoSurfaceID.
+  ContentVideoViewOverlayFactory(int32_t surface_id);
+  ~ContentVideoViewOverlayFactory() override;
+
+  std::unique_ptr<AndroidOverlay> CreateOverlay(
+      const AndroidOverlay::Config& config) override;
+
+ private:
+  int32_t surface_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(ContentVideoViewOverlayFactory);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_GPU_ANDROID_CONTENT_VIDEO_VIEW_OVERLAY_FACTORY_H_