Add wayland_hdr_client

Add wayland_hdr_client which will be used for testing 30bpp/HDR color
space support in exo.

BUG=b:253042256
TEST=None

Change-Id: Icda698ab98e752b4aaf0e914110a8dfb3be87b48
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4222236
Reviewed-by: Jochen Eisinger <[email protected]>
Commit-Queue: Femi Adegunloye <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1102318}
diff --git a/BUILD.gn b/BUILD.gn
index 180414e..a989b32 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -982,6 +982,7 @@
       "//components/exo/wayland:wayland_client_integration_tests",
       "//components/exo/wayland:wayland_client_perftests",
       "//components/exo/wayland:wayland_client_tests",
+      "//components/exo/wayland:wayland_hdr_client",
       "//components/policy/test_support:fake_dmserver",
       "//media:media_unittests",
       "//media/capture:capture_unittests",