[chrome.displaySource][WiFi Display] Video formats capability negotiation

extensions/renderer/api/display_source/wifi_display/wifi_display_media_manager.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_BROWSER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_MANAGER_H_
 #define EXTENSIONS_BROWSER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_MANAGER_H_
 
+#include "base/callback.h"
 #include "base/macros.h"
+#include "third_party/WebKit/public/web/WebDOMMediaStreamTrack.h"
 #include "third_party/wds/src/libwds/public/media_manager.h"
 
 namespace extensions {
 
 class WiFiDisplayMediaManager : public wds::SourceMediaManager {
  public:
-  WiFiDisplayMediaManager();
+  using ErrorCallback = base::Callback<void(const std::string&)>;
+
+  WiFiDisplayMediaManager(
+      const blink::WebMediaStreamTrack& video_track,
+      const blink::WebMediaStreamTrack& audio_track,
+      const ErrorCallback& error_callback);
+
   ~WiFiDisplayMediaManager() override;
 
  private:
   // wds::SourceMediaManager overrides.
   void Play() override;
 
   void Pause() override;
   void Teardown() override;
   bool IsPaused() const override;
   wds::SessionType GetSessionType() const override;
   void SetSinkRtpPorts(int port1, int port2) override;
   std::pair<int,int> GetSinkRtpPorts() const override;
   int GetLocalRtpPort() const override;
 
   bool InitOptimalVideoFormat(
       const wds::NativeVideoFormat& sink_native_format,
       const std::vector<wds::H264VideoCodec>& sink_supported_codecs) override;
   wds::H264VideoFormat GetOptimalVideoFormat() const override;
   bool InitOptimalAudioFormat(
       const std::vector<wds::AudioCodec>& sink_supported_codecs) override;
   wds::AudioCodec GetOptimalAudioFormat() const override;
 
   void SendIDRPicture() override;
 
   std::string GetSessionId() const override;
 
+ private:
+  blink::WebMediaStreamTrack video_track_;
+  blink::WebMediaStreamTrack audio_track_;
+
+  std::pair<int,int> sink_rtp_ports_;
+  wds::H264VideoFormat optimal_video_format_;
+
+  ErrorCallback error_callback_;
+
   DISALLOW_COPY_AND_ASSIGN(WiFiDisplayMediaManager);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_DISPLAY_SOURCE_WIFI_DISPLAY_WIFI_DISPLAY_MEDIA_MANAGER_H_