Upstream ios/showcase source code.

ios/showcase/uikit_table_view_cell/BUILD.gn

Index: ios/showcase/uikit_table_view_cell/BUILD.gn
diff --git a/ios/showcase/uikit_table_view_cell/BUILD.gn b/ios/showcase/uikit_table_view_cell/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..2db31ddb8eb452e3169f2132166d3bde349537e8
--- /dev/null
+++ b/ios/showcase/uikit_table_view_cell/BUILD.gn
@@ -0,0 +1,12 @@
+# Copyright 2016 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.
+
+source_set("uikit_table_view_cell") {
+  sources = [
+    "uikit_table_view_cell_view_controller.h",
+    "uikit_table_view_cell_view_controller.mm",
+  ]
+  libs = [ "UIKit.framework" ]
+  configs += [ "//build/config/compiler:enable_arc" ]
+}