[chrome.displaySource] Move video stream info creation to encoders.

extensions/renderer/api/display_source/wifi_display/wifi_display_video_encoder.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 EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_VIDEO_ENCODER_H_
 #define EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_VIDEO_ENCODER_H_
 
+#include <vector>
+
 #include "base/memory/shared_memory.h"
+#include "extensions/renderer/api/display_source/wifi_display/wifi_display_elementary_stream_descriptor.h"
 #include "extensions/renderer/api/display_source/wifi_display/wifi_display_media_encoder.h"
 #include "media/base/video_frame.h"
 #include "media/video/video_encode_accelerator.h"
 #include "third_party/wds/src/libwds/public/video_format.h"
 
 namespace extensions {
 
 using WiFiDisplayEncodedFrame = WiFiDisplayEncodedUnit;
 
 // This interface represents H.264 video encoder used by the
@@ skipping 28 matching lines @@
     CreateEncodeMemoryCallback create_memory_callback;
     CreateVideoEncodeAcceleratorCallback vea_create_callback;
   };
 
   // A factory method that creates a new encoder instance from the given
   // |params|, the encoder instance is returned as an argument of
   // |result_callback| ('nullptr' argument means encoder creation failure).
   static void Create(const InitParameters& params,
                      const VideoEncoderCallback& encoder_callback);
 
+  // WiFiDisplayMediaEncoder
+  WiFiDisplayElementaryStreamInfo CreateElementaryStreamInfo() const final;
+
   // Encodes the given raw frame. The resulting encoded frame is passed
   // as an |encoded_callback|'s argument which is set via 'SetCallbacks'
   // method.
   void InsertRawVideoFrame(const scoped_refptr<media::VideoFrame>& video_frame,
                            base::TimeTicks reference_time);
 
   // Requests the next encoded frame to be an instantaneous decoding refresh
   // (IDR) picture.
   void RequestIDRPicture();
 
  protected:
   // A factory method that creates a new encoder instance which uses Video
   // Encode Accelerator (VEA) for encoding.
   static void CreateVEA(const InitParameters& params,
                         const VideoEncoderCallback& encoder_callback);
 
   explicit WiFiDisplayVideoEncoder(
       scoped_refptr<base::SingleThreadTaskRunner> media_task_runner);
   ~WiFiDisplayVideoEncoder() override;
 
+  virtual std::vector<WiFiDisplayElementaryStreamDescriptor>
+  CreateElementaryStreamDescriptors() const;
+
   virtual void InsertFrameOnMediaThread(
       scoped_refptr<media::VideoFrame> video_frame,
       base::TimeTicks reference_time,
       bool send_idr) = 0;
 
   scoped_refptr<base::SingleThreadTaskRunner> media_task_runner_;
   bool send_idr_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_VIDEO_ENCODER_H_