[WebRTC] Implement Windows ScreenDrawer to test ScreenCapturer*

webrtc/modules/desktop_capture/screen_drawer_mac.cc

Index: webrtc/modules/desktop_capture/screen_drawer_mac.cc
diff --git a/webrtc/modules/audio_coding/neteq/packet.cc b/webrtc/modules/desktop_capture/screen_drawer_mac.cc
similarity index 71%
copy from webrtc/modules/audio_coding/neteq/packet.cc
copy to webrtc/modules/desktop_capture/screen_drawer_mac.cc
index 8a19fe4d5923d5e22a5b485600c6da0c5f3856ba..1d0437b5a1022b26afaa5942d6abe76066fe455b 100644
--- a/webrtc/modules/audio_coding/neteq/packet.cc
+++ b/webrtc/modules/desktop_capture/screen_drawer_mac.cc
@@ -8,12 +8,15 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/modules/audio_coding/neteq/packet.h"
+// TODO(zijiehe): Implement ScreenDrawerMac
 
-namespace webrtc {
+#include "webrtc/modules/desktop_capture/screen_drawer.h"
 
-Packet::Packet() = default;
+namespace webrtc {
 
-Packet::~Packet() = default;
+// static
+std::unique_ptr<ScreenDrawer> ScreenDrawer::Create() {
+  return nullptr;
+}
 
 }  // namespace webrtc