ozone: Fix GN build for ozone_egl_demo, ozone_unittests

ui/ozone/platform/caca/BUILD.gn

+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("//build/config/linux/pkg_config.gni")
+
+source_set("caca") {
+  sources = [
+    "caca_event_factory.cc",
+    "caca_event_factory.h",
+    "caca_window.cc",
+    "caca_window.h",
+    "caca_window_manager.cc",
+    "caca_window_manager.h",
+    "ozone_platform_caca.cc",
+    "ozone_platform_caca.h",
+    "scoped_caca_types.cc",
+    "scoped_caca_types.h",
+  ]
+
+  deps = [
+    "//base",
+    "//skia",
+    "//ui/gfx/geometry",
+  ]
+
+  configs += [
+    ":libcaca",
+  ]
+}
+
+pkg_config("libcaca") {
+  packages = [ "caca" ]
+}