Revert of Add CreateWindowCapturer() and CreateScreenCapturer() in DesktopCapturer

webrtc/modules/desktop_capture/fake_desktop_capturer.h

Index: webrtc/modules/desktop_capture/fake_desktop_capturer.h
diff --git a/webrtc/modules/desktop_capture/fake_desktop_capturer.h b/webrtc/modules/desktop_capture/fake_desktop_capturer.h
index 30187775408653bf9e5fd480a150ca3d319f59cc..fa5ccba7eb15c2e9b46dcd3c78ceb1ac7c684e9a 100644
--- a/webrtc/modules/desktop_capture/fake_desktop_capturer.h
+++ b/webrtc/modules/desktop_capture/fake_desktop_capturer.h
@@ -15,7 +15,6 @@
 #include <utility>
 
 #include "webrtc/modules/desktop_capture/desktop_capturer.h"
-#include "webrtc/modules/desktop_capture/desktop_capture_types.h"
 #include "webrtc/modules/desktop_capture/desktop_frame_generator.h"
 #include "webrtc/modules/desktop_capture/shared_desktop_frame.h"
 #include "webrtc/modules/desktop_capture/shared_memory.h"
@@ -38,7 +37,7 @@
 //
 // TODO(zijiehe): Remove template T once we merge ScreenCapturer and
 // WindowCapturer.
-template <typename T = DesktopCapturer>
+template <typename T>
 class FakeDesktopCapturer : public T {
  public:
   FakeDesktopCapturer()
@@ -84,20 +83,7 @@
     shared_memory_factory_ = std::move(shared_memory_factory);
   }
 
-  bool GetSourceList(DesktopCapturer::SourceList* sources) override {
-    sources->push_back({kWindowId, "A-Fake-DesktopCapturer-Window"});
-    sources->push_back({kScreenId});
-    return true;
-  }
-
-  bool SelectSource(DesktopCapturer::SourceId id) override {
-    return id == kWindowId || id == kScreenId || id == kFullDesktopScreenId;
-  }
-
  private:
-  static constexpr DesktopCapturer::SourceId kWindowId = 1378277495;
-  static constexpr DesktopCapturer::SourceId kScreenId = 1378277496;
-
   DesktopCapturer::Callback* callback_;
   std::unique_ptr<SharedMemoryFactory> shared_memory_factory_;
   DesktopCapturer::Result result_;