Moving mojo/validation test into LayoutTests

mojo/public/interfaces/bindings/tests/BUILD.gn

Index: mojo/public/interfaces/bindings/tests/BUILD.gn
diff --git a/mojo/public/interfaces/bindings/tests/BUILD.gn b/mojo/public/interfaces/bindings/tests/BUILD.gn
index 06d0f9548014c11d8e2da029e06a3ed3f17735ec..385f382a152b59193583923e537a4b63ebb29561 100644
--- a/mojo/public/interfaces/bindings/tests/BUILD.gn
+++ b/mojo/public/interfaces/bindings/tests/BUILD.gn
@@ -4,6 +4,22 @@
 
 import("../../../tools/bindings/mojom.gni")
 
+group("tests") {
+  testonly = true
+  deps = [
+    ":test_data",
+    ":test_interfaces",
+  ]
+}
+
+action("test_data") {
+  script = "gen_data_files_list.py"
+  outputs = [
+    "$target_gen_dir/data_files.txt",

[yzshen1, 2017/03/22 17:39:34]

In addition to generating this data_files.txt, does it make sense to copy all
the validation test cases to gen/, and set explicit data deps GN rule on all
those files?

According to the discussion on https://codereview.chromium.org/2759803002, my
understanding is that people would like to only allow external data dependencies
in gen/ (rather than random places in the source tree outside of LayoutTests/).

+CC dpranke
Hi, Dirk. What do you think? Thanks!

+  ]
+  args = rebase_path([ "data/validation" ] + outputs, root_build_dir)
+}
+
 mojom("test_interfaces") {
   testonly = true
   sources = [