Merge "Add unit test for intra prediction."

diff --cc test/test.mk
index cdd213de79df21f8974185a044e01f802b2cb7d6,2853f47790bcf86a73740ee5d2c17c8fc0d908e4..20bcdc42a63918422b57d2b25ae8ed4132354f65
--- 1/test/test.mk
--- 2/test/test.mk
+++ b/test/test.mk
@@@ -3,8 -3,8 +3,9 @@@ LIBVPX_TEST_SRCS-yes += boolcoder_test.
  LIBVPX_TEST_SRCS-yes += config_test.cc
  LIBVPX_TEST_SRCS-yes += encode_test_driver.cc
  LIBVPX_TEST_SRCS-yes += encode_test_driver.h
 +LIBVPX_TEST_SRCS-yes += i420_video_source.h
  LIBVPX_TEST_SRCS-yes += idctllm_test.cc
+ LIBVPX_TEST_SRCS-yes += intrapred_test.cc
  LIBVPX_TEST_SRCS-yes += keyframe_test.cc
  LIBVPX_TEST_SRCS-yes += pp_filter_test.cc
  LIBVPX_TEST_SRCS-yes += resize_test.cc