Moving mojo/validation test into LayoutTests

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 5728f4270175b359528f520eaeaed326a14d84ce..7cd09120d020f29fc2233edb49728a5092a6faf4 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -899,6 +899,7 @@ if (!is_ios) {
       "//content/shell:content_shell",
       "//mojo/public/interfaces/bindings/tests:test_interfaces",
       "//third_party/WebKit/public:blink_devtools_frontend_resources_files",
+      "//third_party/WebKit/LayoutTests/mojo:data_files",

[damargulis, 2017/03/21 16:56:44]

Using your patch, I was able to finish the validation tests by using the
generated file directory.  However, this was my first time working with .gn
files, so I am not sure if I organized the BUILD directories in the best way.  

Also, I marked this change as dependent by including CQ-DEPEND=CL:2759803002 in
the description, but it is unclear to me if this is being read properly by the
system.  Let me know if I need to add anything else, or any other changes I
should make.

Thanks for the help!

       "//third_party/mesa:osmesa",
       "//tools/imagediff",
     ]