Fix mac video_render implementation on cocoa.

Hit this while playing around with all compile possibilities for issue 3770.

BUG=3770
TBR=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/23629004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7166 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/video_render/mac/cocoa_render_view.mm

@@ -10,8 +10,9 @@
 
 #import <Cocoa/Cocoa.h>
 #import <AppKit/AppKit.h>
-#import "cocoa_render_view.h"
-#include "trace.h"
+
+#include "webrtc/modules/video_render/mac/cocoa_render_view.h"
+#include "webrtc/system_wrappers/interface/trace.h"
 
 using namespace webrtc;