include simulcast headers for mac also (#10)

Author: hiroshihorie

sdk/BUILD.gn

@@ -1321,7 +1321,6 @@ if (is_ios || is_mac) {
           "objc/components/video_codec/RTCVideoDecoderH264.h",
           "objc/components/video_codec/RTCVideoEncoderFactoryH264.h",
           "objc/components/video_codec/RTCVideoEncoderH264.h",
-          "objc/components/video_codec/RTCVideoEncoderFactorySimulcast.h",
           "objc/components/video_frame_buffer/RTCCVPixelBuffer.h",
           "objc/helpers/RTCCameraPreviewView.h",
           "objc/helpers/RTCDispatcher.h",
@@ -1369,9 +1368,11 @@ if (is_ios || is_mac) {
           "objc/api/video_codec/RTCVideoEncoderVP8.h",
           "objc/api/video_codec/RTCVideoEncoderVP9.h",
           "objc/api/video_codec/RTCVideoEncoderAV1.h",
-          "objc/api/video_codec/RTCVideoEncoderSimulcast.h",
           "objc/api/video_frame_buffer/RTCNativeI420Buffer.h",
           "objc/api/video_frame_buffer/RTCNativeMutableI420Buffer.h",
+          # Added for Simulcast support
+          "objc/components/video_codec/RTCVideoEncoderFactorySimulcast.h",
+          "objc/api/video_codec/RTCVideoEncoderSimulcast.h",
         ]
 
         if (!build_with_chromium) {
@@ -1518,6 +1519,9 @@ if (is_ios || is_mac) {
           "objc/components/video_codec/RTCVideoEncoderH264.h",
           "objc/components/video_frame_buffer/RTCCVPixelBuffer.h",
           "objc/helpers/RTCDispatcher.h",
+          # Added for Simulcast support
+          "objc/components/video_codec/RTCVideoEncoderFactorySimulcast.h",
+          "objc/api/video_codec/RTCVideoEncoderSimulcast.h",
         ]
         if (!build_with_chromium) {
           sources += [