Merge changes I94a061eb,If6910fe3

* changes:
  add auto keyframe unit test
  Add support for downloading test data

diff --cc test/test.mk
index 11b05c96dd6cf9a22e183747cc04ccbab12242b5,c68801db06e57cfbbfbd8a00cd797480329e5d82..cdd213de79df21f8974185a044e01f802b2cb7d6
--- 1/test/test.mk
--- 2/test/test.mk
+++ b/test/test.mk
@@@ -3,9 -3,11 +3,12 @@@ 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 += keyframe_test.cc
 +LIBVPX_TEST_SRCS-yes += pp_filter_test.cc
  LIBVPX_TEST_SRCS-yes += resize_test.cc
  LIBVPX_TEST_SRCS-yes += test_libvpx.cc
  LIBVPX_TEST_SRCS-yes += video_source.h
 -LIBVPX_TEST_DATA-yes += hantro_collage_w352h288.yuv
+ 
++LIBVPX_TEST_DATA-yes += hantro_collage_w352h288.yuv