Re-worked header files

Various header/test files had to be re-worked in order to
build "Remove cm parameter from vp9_decode_block_tokens()".

This patch reverts the "Remove cm" part and only contains
the re-worked header files.

Change-Id: I520958a88d1991fee988a3c784d0eac40e117a32

test/vp9_error_block_test.cc

@@ -21,6 +21,7 @@
 #include "./vpx_config.h"
 #include "./vp9_rtcd.h"
 #include "vp9/common/vp9_entropy.h"
+#include "vpx/vpx_codec.h"
 #include "vpx/vpx_integer.h"
 
 using libvpx_test::ACMRandom;