Revert of Add DesktopCapturer GetSourceList SelectSource FocusOnSelectedSource functions

webrtc/modules/desktop_capture/screen_capturer.h

Index: webrtc/modules/desktop_capture/screen_capturer.h
diff --git a/webrtc/modules/desktop_capture/screen_capturer.h b/webrtc/modules/desktop_capture/screen_capturer.h
index a6bbde73eece2721ffeab0a69180a295798461d3..5f07ba1a53318986a6a4af20a2d5730ba05196b8 100644
--- a/webrtc/modules/desktop_capture/screen_capturer.h
+++ b/webrtc/modules/desktop_capture/screen_capturer.h
@@ -21,7 +21,6 @@
 
 class DesktopCaptureOptions;
 
-// TODO(zijiehe): Remove this class.
 // Class used to capture video frames asynchronously.
 //
 // The full capture sequence is as follows:
@@ -49,25 +48,19 @@
   };
   typedef std::vector<Screen> ScreenList;
 
-  ~ScreenCapturer() override;
+  ~ScreenCapturer() override {}
 
   // Creates a platform-specific capturer.
   static ScreenCapturer* Create(const DesktopCaptureOptions& options);
 
-  // Deprecated, use GetSourceList().
   // Get the list of screens (not containing kFullDesktopScreenId). Returns
   // false in case of a failure.
-  virtual bool GetScreenList(ScreenList* screens);
+  virtual bool GetScreenList(ScreenList* screens) = 0;
 
-  // Deprecated, use SelectSource().
   // Select the screen to be captured. Returns false in case of a failure (e.g.
   // if there is no screen with the specified id). If this is never called, the
   // full desktop is captured.
-  virtual bool SelectScreen(ScreenId id);
-
-  // DesktopCapturer interfaces.
-  bool GetSourceList(SourceList* sources) override;
-  bool SelectSource(SourceId id) override;
+  virtual bool SelectScreen(ScreenId id) = 0;
 };
 
 }  // namespace webrtc