Remove content/port directory and move the 3 remaining interfaces to content/public.

content/port/browser/render_widget_host_view_frame_subscriber.h

-// Copyright (c) 2012 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 CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_FRAME_SUBSCRIBER_H_
-#define CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_FRAME_SUBSCRIBER_H_
-
-#include "base/callback.h"
-#include "base/time/time.h"
-
-namespace gfx {
-class Rect;
-class Size;
-}  // namespace gfx
-
-namespace media {
-class VideoFrame;
-}  // namespace media
-
-namespace content {
-
-// Defines an interface for listening to events of frame presentation and to
-// instruct the platform layer (i.e. RenderWidgetHostView) to copy a frame.
-//
-// Further processing is possible (e.g. scale and color space conversion)
-// through this interface. See ShouldCaptureFrame() for details.
-//
-// It is platform dependent which thread this object lives on, but it is
-// guaranteed to be used on a single thread.
-class RenderWidgetHostViewFrameSubscriber {
- public:
-  virtual ~RenderWidgetHostViewFrameSubscriber() {}
-
-  // Called when a captured frame is available or the frame is no longer
-  // needed by the platform layer.
-  //
-  // If |frame_captured| is true then frame provided contains valid content and
-  // |timestamp| is the time when the frame was painted.
-  //
-  // If |frame_captured| is false then the content in frame provided is
-  // invalid. There was an error during the process of frame capture or the
-  // platform layer is shutting down. |timestamp| is also invalid in this case.
-  typedef base::Callback<void(base::TimeTicks /* timestamp */,
-                              bool /* frame_captured */)> DeliverFrameCallback;
-
-  // Called when a new frame is going to be presented at time
-  // |present_time|. Implementation can decide whether the current frame should
-  // be captured or not.
-  //
-  // Return true if the current frame should be captured. If so, |storage|
-  // should will be set to hold an appropriately sized and allocated buffer
-  // into which to copy the frame. The platform presenter will perform scaling
-  // and color space conversion to fit into the output frame.
-  //
-  // Destination format is determined by |storage|, currently only
-  // media::VideoFrame::YV12 is supported. Platform layer will perform color
-  // space conversion if needed.
-  //
-  // When the frame is available |callback| will be called. It is up to the
-  // platform layer to decide when to deliver a captured frame.
-  //
-  // Return false if the current frame should not be captured.
-  virtual bool ShouldCaptureFrame(base::TimeTicks present_time,
-                                  scoped_refptr<media::VideoFrame>* storage,
-                                  DeliverFrameCallback* callback) = 0;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PORT_BROWSER_RENDER_WIDGET_HOST_VIEW_FRAME_SUBSCRIBER_H_