Do real chroma RDO search for CDEF

Chroma now has a list of strenghts too, with the superblock signalling
shared between luma and chroma.

low-latency, cpu=4:

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
-0.0114 | -1.4626 | -1.4745 |  -0.0423 | 0.0430 | -0.0001 |    -0.7416

Change-Id: I389c77f1d80020f810e45f8502c656ad9d397c8c
diff --git a/av1/common/onyxc_int.h b/av1/common/onyxc_int.h
index 17ac451..64f9a6e 100644
--- a/av1/common/onyxc_int.h
+++ b/av1/common/onyxc_int.h
@@ -404,9 +404,8 @@
 #if CONFIG_CDEF
   int nb_cdef_strengths;
   int cdef_strengths[CDEF_MAX_STRENGTHS];
+  int cdef_uv_strengths[CDEF_MAX_STRENGTHS];
   int cdef_bits;
-  int clpf_strength_u;
-  int clpf_strength_v;
 #endif
 
 #if CONFIG_DELTA_Q