Remove the requirement of D3D_FEATURE_LEVEL_11_0, but export the D3D_FEATURE_LEVEL through APIs

webrtc/modules/desktop_capture/win/screen_capturer_win_directx.cc

Index: webrtc/modules/desktop_capture/win/screen_capturer_win_directx.cc
diff --git a/webrtc/modules/desktop_capture/win/screen_capturer_win_directx.cc b/webrtc/modules/desktop_capture/win/screen_capturer_win_directx.cc
index 770cfa212c586da6d9009bb3f312bf6008d9a9c5..fcef14137ec3741f05170315ffa827f4a74b0645 100644
--- a/webrtc/modules/desktop_capture/win/screen_capturer_win_directx.cc
+++ b/webrtc/modules/desktop_capture/win/screen_capturer_win_directx.cc
@@ -23,10 +23,17 @@ using Microsoft::WRL::ComPtr;
 
 // static
 bool ScreenCapturerWinDirectx::IsSupported() {
-  // Forward IsSupported function call to DxgiDuplicatorController.
+  // Forwards IsSupported() function call to DxgiDuplicatorController.
   return DxgiDuplicatorController::Instance()->IsSupported();
 }
 
+// static
+bool ScreenCapturerWinDirectx::RetrieveD3dInfo(D3dInfo* info) {
+  // Forwards SupportedFeatureLevels() function call to
+  // DxgiDuplicatorController.
+  return DxgiDuplicatorController::Instance()->RetrieveD3dInfo(info);
+}
+
 ScreenCapturerWinDirectx::ScreenCapturerWinDirectx(
     const DesktopCaptureOptions& options)
     : callback_(nullptr) {}