text: // 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.
  
  #ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIACAPTUREFROMELEMENT_AUTO_CANVAS_DRAW_LISTENER_H_
  #define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIACAPTUREFROMELEMENT_AUTO_CANVAS_DRAW_LISTENER_H_
  
  #include <memory>
  #include "third_party/blink/renderer/core/html/canvas/canvas_draw_listener.h"
  #include "third_party/blink/renderer/modules/mediacapturefromelement/canvas_capture_handler.h"
  #include "third_party/blink/renderer/platform/heap/handle.h"
  
  namespace blink {
  
  class AutoCanvasDrawListener
      : public GarbageCollectedFinalized<AutoCanvasDrawListener>,
        public CanvasDrawListener {
    USING_GARBAGE_COLLECTED_MIXIN(AutoCanvasDrawListener);
  
   public:
    explicit AutoCanvasDrawListener(std::unique_ptr<CanvasCaptureHandler>);
    ~AutoCanvasDrawListener() override = default;
  
    void SendNewFrame(
        sk_sp<SkImage>,
        base::WeakPtr<WebGraphicsContext3DProviderWrapper>) override;
    bool NeedsNewFrame() const final;
    void RequestFrame() final;
  
    void Trace(blink::Visitor*) override {}
  
   protected:
    std::unique_ptr<CanvasCaptureHandler> handler_;
    bool frame_capture_requested_;
  };
  
  }  // namespace blink
  
  #endif
  