Set ozone_platform_wayland to true for ozone/ChromeOS builds

ui/ozone/BUILD.gn

Index: ui/ozone/BUILD.gn
diff --git a/ui/ozone/BUILD.gn b/ui/ozone/BUILD.gn
index 70a0b92bf6c101d2d9fd13cbfa51c4cf65fa1192..a9eb3bad99f96302275f2b4a810f58e87089f1a3 100644
--- a/ui/ozone/BUILD.gn
+++ b/ui/ozone/BUILD.gn
@@ -10,6 +10,13 @@ assert(use_ozone)
 
 visibility = [ ":*" ]
 
+declare_args() {
+  # TODO(tonikitoo): In order to effectively build the ozone/wayland backend by
+  # the chromeos/ozone/ buildbot, opt-out to run wayland unittests since they fail.
+  # https://bugs.chromium.org/p/chromium/issues/detail?id=657014
+  ozone_platform_wayland_unittests = false
+}
+
 # The list of platforms that will be built.
 ozone_platforms = []
 
@@ -43,7 +50,9 @@ if (ozone_platform_cast) {
 if (ozone_platform_wayland) {
   ozone_platforms += [ "wayland" ]
   ozone_platform_deps += [ "platform/wayland" ]
-  ozone_platform_test_deps += [ "platform/wayland:wayland_unittests" ]
+  if (ozone_platform_wayland_unittests) {
+    ozone_platform_test_deps += [ "platform/wayland:wayland_unittests" ]
+  }
 }
 
 if (ozone_platform_x11) {