Fix missing ozone demo in CrOS build

The ozone demo build file is currently removed from Chrome OS & chromecast
builds, but we want to have it in all builds that set use_ozone=true.

Review URL: https://codereview.chromium.org/1864583004

Cr-Commit-Position: refs/heads/master@{#385462}
diff --git a/BUILD.gn b/BUILD.gn
index aa706be..5384e51 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -711,15 +711,15 @@
         "//third_party/libjpeg_turbo:simd_asm",
       ]
     }
-    if (use_ozone) {
-      deps += [ "//ui/ozone/demo" ]
-    }
-
     if (is_linux && current_toolchain == host_toolchain) {
       deps += [ "//v8:d8" ]
     }
   }
 
+  if (use_ozone) {
+    deps += [ "//ui/ozone/demo" ]
+  }
+
   if (enable_nacl) {
     deps += [ "//native_client_sdk/src:nacl_core_sdk" ]
   }