Mac VideoCapture: return empty GetModel() for non-USB non-built-in cameras.

media/video/capture/mac/video_capture_device_qtkit_mac.mm

Index: media/video/capture/mac/video_capture_device_qtkit_mac.mm
diff --git a/media/video/capture/mac/video_capture_device_qtkit_mac.mm b/media/video/capture/mac/video_capture_device_qtkit_mac.mm
index c884c723df5cb0afa5964551163f9ba8480c523a..22a0e70957d7e35f6817c2a93a43bea1d77620ce 100644
--- a/media/video/capture/mac/video_capture_device_qtkit_mac.mm
+++ b/media/video/capture/mac/video_capture_device_qtkit_mac.mm
@@ -29,9 +29,15 @@
       });
 
   for (QTCaptureDevice* device in captureDevices) {
-    if (![[device attributeForKey:QTCaptureDeviceSuspendedAttribute] boolValue])
-      [deviceNames setObject:[device localizedDisplayName]
-                      forKey:[device uniqueID]];
+    if ([[device attributeForKey:QTCaptureDeviceSuspendedAttribute] boolValue])
+      continue;
+    DeviceNameAndTransportType* name_and_transport_type =

[Robert Sesek, 2014/07/01 16:23:57]

nit: naming again

[mcasas, 2014/07/02 07:37:35]

Done.

+        [[[DeviceNameAndTransportType alloc]
+             initWithName:[device localizedDisplayName]
+            transportType:media::kIOAudioDeviceTransportTypeUnknown]
+            autorelease];
+    [deviceNames setObject:name_and_transport_type
+                    forKey:[device uniqueID]];
   }
 }