Delete VideoCaptureCapability::codecType and related logic.

webrtc/modules/video_capture/objc/device_info_objc.mm

Index: webrtc/modules/video_capture/objc/device_info_objc.mm
diff --git a/webrtc/modules/video_capture/objc/device_info_objc.mm b/webrtc/modules/video_capture/objc/device_info_objc.mm
index 5639380163adc0ea4efd5764e7f7f692babbe653..30a07b973b17bb5cdb8afb5d7d16bb528a5d7c18 100644
--- a/webrtc/modules/video_capture/objc/device_info_objc.mm
+++ b/webrtc/modules/video_capture/objc/device_info_objc.mm
@@ -61,21 +61,18 @@
     capability.height = 288;
     capability.maxFPS = 30;
     capability.rawType = webrtc::kVideoNV12;
-    capability.codecType = webrtc::kVideoCodecUnknown;
     capability.interlaced = false;
   } else if ([preset isEqualToString:AVCaptureSessionPreset640x480]) {
     capability.width = 640;
     capability.height = 480;
     capability.maxFPS = 30;
     capability.rawType = webrtc::kVideoNV12;
-    capability.codecType = webrtc::kVideoCodecUnknown;
     capability.interlaced = false;
   } else if ([preset isEqualToString:AVCaptureSessionPreset1280x720]) {
     capability.width = 1280;
     capability.height = 720;
     capability.maxFPS = 30;
     capability.rawType = webrtc::kVideoNV12;
-    capability.codecType = webrtc::kVideoCodecUnknown;
     capability.interlaced = false;
   }