media: Add {guado,rikku}-cfm to import blacklist.

This CL adds the guado-cfm and rikku-cfm builds to the IMPORT mode
blacklist used by the video_decode_accelerator(_perf)_tests. The reason
is that these boards decode VP8 using V4L2, so we need to force ALLOCATE
mode for them.

Bug: 1028329
Test: Run tast.video.DecodeAccel.vp8 in guado
Change-Id: I7fb9b6d374cc65026b91c0ceafd82ece3d0c530e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1943467
Auto-Submit: Andres Calderon Jaramillo <andrescj@chromium.org>
Commit-Queue: David Staessens <dstaessens@chromium.org>
Reviewed-by: David Staessens <dstaessens@chromium.org>
Cr-Commit-Position: refs/heads/master@{#720370}

media/gpu/test/video_player/video_player_test_environment.cc

@@ -65,8 +65,8 @@ void VideoPlayerTestEnvironment::SetUp() {
   // support import mode.
 #if defined(OS_CHROMEOS)
   constexpr const char* kImportModeBlacklist[] = {
-      "buddy",      "guado", "guado-kernelnext", "nyan_big", "nyan_blaze",
-      "nyan_kitty", "rikku"};
+      "buddy",      "guado",      "guado-cfm", "guado-kernelnext", "nyan_big",
+      "nyan_blaze", "nyan_kitty", "rikku",     "rikku-cfm"};
   const std::string board = base::SysInfo::GetLsbReleaseBoard();
   import_supported_ = (std::find(std::begin(kImportModeBlacklist),
                                  std::end(kImportModeBlacklist),