Revert of Remove all reference to carbon api

webrtc/media/devices/videorendererfactory.h

Index: webrtc/media/devices/videorendererfactory.h
diff --git a/webrtc/media/devices/videorendererfactory.h b/webrtc/media/devices/videorendererfactory.h
index bdc56861e84f1dfe377821b1dee921afb5388dbf..0bacdbd09aa53cede86857123ddde10de36de2a8 100644
--- a/webrtc/media/devices/videorendererfactory.h
+++ b/webrtc/media/devices/videorendererfactory.h
@@ -17,6 +17,8 @@
 #include "webrtc/media/base/videosinkinterface.h"
 #if defined(WEBRTC_LINUX) && defined(HAVE_GTK)
 #include "webrtc/media/devices/gtkvideorenderer.h"
+#elif defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) && !defined(CARBON_DEPRECATED)
+#include "webrtc/media/devices/carbonvideorenderer.h"
 #elif defined(WIN32)
 #include "webrtc/media/devices/gdivideorenderer.h"
 #endif
@@ -30,6 +32,16 @@
       int y) {
   #if defined(WEBRTC_LINUX) && defined(HAVE_GTK)
     return new GtkVideoRenderer(x, y);
+  #elif defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) && \
+      !defined(CARBON_DEPRECATED)
+    CarbonVideoRenderer* renderer = new CarbonVideoRenderer(x, y);
+    // Needs to be initialized on the main thread.
+    if (renderer->Initialize()) {
+      return renderer;
+    } else {
+      delete renderer;
+      return NULL;
+    }
   #elif defined(WIN32)
     return new GdiVideoRenderer(x, y);
   #else