--- a/dom/media/webrtc/MediaEngineCameraVideoSource.h
+++ b/dom/media/webrtc/MediaEngineCameraVideoSource.h
@@ -4,19 +4,29 @@
 
 #ifndef MediaEngineCameraVideoSource_h
 #define MediaEngineCameraVideoSource_h
 
 #include "MediaEngine.h"
 
 #include "nsDirectoryServiceDefs.h"
 
+#ifdef MOZ_WEBRTC
 // conflicts with #include of scoped_ptr.h
 #undef FF
 #include "webrtc/video_engine/include/vie_capture.h"
+#else
+namespace webrtc
+{
+  struct CaptureCapability {
+    unsigned int width, height, maxFPS;
+    CaptureCapability() : width(0), height(0), maxFPS(0) {}
+  };
+}
+#endif
 
 namespace mozilla {
 
 bool operator == (const webrtc::CaptureCapability& a,
                   const webrtc::CaptureCapability& b);
 bool operator != (const webrtc::CaptureCapability& a,
                   const webrtc::CaptureCapability& b);