Add DesktopCapturer GetSourceList SelectSource FocusOnSelectedSource functions

webrtc/modules/desktop_capture/window_capturer.h

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_WINDOW_CAPTURER_H_
 #define WEBRTC_MODULES_DESKTOP_CAPTURE_WINDOW_CAPTURER_H_
 
 #include <string>
 #include <vector>
 
 #include "webrtc/base/constructormagic.h"
 #include "webrtc/modules/desktop_capture/desktop_capture_types.h"
 #include "webrtc/modules/desktop_capture/desktop_capturer.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 
 class DesktopCaptureOptions;
 
+// TODO(zijiehe): Remove this class.
 class WindowCapturer : public DesktopCapturer {
  public:
   typedef webrtc::WindowId WindowId;
 
   struct Window {
     WindowId id;
 
     // Title of the window in UTF-8 encoding.
     std::string title;
   };
 
   typedef std::vector<Window> WindowList;
 
+  // Consumers should use DesktopCapturer::CreateWindowCapturer.
   static WindowCapturer* Create(const DesktopCaptureOptions& options);
 
-  ~WindowCapturer() override {}
+  ~WindowCapturer() override;
 
+  // Deprecated, use GetSourceList().
   // Get list of windows. Returns false in case of a failure.
-  virtual bool GetWindowList(WindowList* windows) = 0;
+  virtual bool GetWindowList(WindowList* windows);
 
+  // Deprecated, use SelectSource().
   // Select window to be captured. Returns false in case of a failure (e.g. if
   // there is no window with the specified id).
-  virtual bool SelectWindow(WindowId id) = 0;
+  virtual bool SelectWindow(WindowId id);
 
+  // Deprecated, use FocusOnSelectedSource().
   // Bring the selected window to the front. Returns false in case of a
   // failure or no window selected.
-  virtual bool BringSelectedWindowToFront() = 0;
+  virtual bool BringSelectedWindowToFront();
+
+  // DesktopCapturer interfaces.
+  bool GetSourceList(SourceList* sources) override;
+  bool SelectSource(SourceId id) override;
+  bool FocusOnSelectedSource() override;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_DESKTOP_CAPTURE_WINDOW_CAPTURER_H_