[Chromoting] Implement new APIs in DesktopCapturer

remoting/host/desktop_capturer_proxy.h

 // 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 REMOTING_HOST_DESKTOP_CAPTURER_PROXY_H_
 #define REMOTING_HOST_DESKTOP_CAPTURER_PROXY_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 11 matching lines @@
 }  // namespace webrtc
 
 namespace remoting {
 
 namespace protocol {
 class CursorShapeInfo;
 }  // namespace protocol
 
 // DesktopCapturerProxy is responsible for calling webrtc::DesktopCapturer on
 // the capturer thread and then returning results to the caller's thread.
+// GetSourceList() and SelectSource() functions are not implemented by this
+// class, they always return false.
 class DesktopCapturerProxy : public webrtc::DesktopCapturer {
  public:
   explicit DesktopCapturerProxy(
       scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner);
   ~DesktopCapturerProxy() override;
 
   // CreateCapturer() should be used if the capturer needs to be created on the
   // capturer thread. Alternatively the capturer can be passed to
   // set_capturer().
   void CreateCapturer(const webrtc::DesktopCaptureOptions& options);
   void set_capturer(std::unique_ptr<webrtc::DesktopCapturer> capturer);
 
   // webrtc::DesktopCapturer interface.
   void Start(Callback* callback) override;
   void SetSharedMemoryFactory(std::unique_ptr<webrtc::SharedMemoryFactory>
                                   shared_memory_factory) override;
   void CaptureFrame() override;
+  bool GetSourceList(SourceList* sources) override;
+  bool SelectSource(SourceId id) override;
 
  private:
   class Core;
 
   void OnFrameCaptured(webrtc::DesktopCapturer::Result result,
                        std::unique_ptr<webrtc::DesktopFrame> frame);
 
   base::ThreadChecker thread_checker_;
 
   std::unique_ptr<Core> core_;
   scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner_;
   webrtc::DesktopCapturer::Callback* callback_;
 
   base::WeakPtrFactory<DesktopCapturerProxy> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopCapturerProxy);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_DESKTOP_CAPTURER_PROXY_H_