Mac AVFoundation: minor bugfix using QTKit for devices not working with AVF (Blackmagic).

media/video/capture/mac/video_capture_device_mac.mm

Index: media/video/capture/mac/video_capture_device_mac.mm
diff --git a/media/video/capture/mac/video_capture_device_mac.mm b/media/video/capture/mac/video_capture_device_mac.mm
index 1a65e990910aac11cf50c43983ec3d117ac30bf8..3e1915ba0afe383d72319b06f543a871364cf827 100644
--- a/media/video/capture/mac/video_capture_device_mac.mm
+++ b/media/video/capture/mac/video_capture_device_mac.mm
@@ -87,7 +87,8 @@ void VideoCaptureDevice::GetDeviceNames(Names* device_names) {
       // Extract the device's Vendor ID and compare to all blacklisted ones.
       device_vid = name.GetModel().substr(0, kVidPidSize);
       for (size_t i = 0; i < arraysize(kBlacklistedCameras); ++i) {
-        is_any_device_blacklisted |= (device_vid == kBlacklistedCameras[i].vid);
+        is_any_device_blacklisted |=
+            !strcasecmp(device_vid.c_str(), kBlacklistedCameras[i].vid);
         if (is_any_device_blacklisted)
           break;
       }