cpplint errors in vp9_onyx_if.h

Slightly bigger change -> broke up encode_frame_to_datarate,  lots
of line length fixes.

Change-Id: I7c53325e954de130f3fe1a6656626efc6705be82

vp9/encoder/vp9_firstpass.h

@@ -10,6 +10,7 @@
 
 #ifndef VP9_ENCODER_VP9_FIRSTPASS_H_
 #define VP9_ENCODER_VP9_FIRSTPASS_H_
+#include "vp9/encoder/vp9_onyx_int.h"
 
 void vp9_init_first_pass(VP9_COMP *cpi);
 void vp9_first_pass(VP9_COMP *cpi);