ozone: Fix GN build for ozone_egl_demo, ozone_unittests

ui/ozone/demo/BUILD.gn

Index: ui/ozone/demo/BUILD.gn
diff --git a/components/history/core/common/BUILD.gn b/ui/ozone/demo/BUILD.gn
similarity index 56%
copy from components/history/core/common/BUILD.gn
copy to ui/ozone/demo/BUILD.gn
index 7a493141978ebc86786ede32720f563e8a537d74..e1a5ba9e388dbd0c3279f7b3be851ae4f88a496c 100644
--- a/components/history/core/common/BUILD.gn
+++ b/ui/ozone/demo/BUILD.gn
@@ -2,13 +2,21 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-static_library("common") {
+group("demo") {
+  deps = [
+    ":ozone_egl_demo",
+  ]
+}
+
+executable("ozone_egl_demo") {
   sources = [
-    "thumbnail_score.cc",
-    "thumbnail_score.h",
+    "egl_demo.cc",
   ]
 
   deps = [
     "//base",
+    "//ui/gfx/geometry",
+    "//ui/gl",
+    "//ui/ozone",
   ]
 }