Add test list to deps

Adds the generated CTS test list to the existing gn/webgpu-cts group
so that Chromium tests properly include the generated file.

Also updates some existing BUILD.gn file paths to be consistent with
Chromium styling: relative paths without the leading ./ for files
under the current directory and directories before and separate from
individual files.

Bug: dawn:1479
Change-Id: Icce70e7fcee874b6b33c21230c8a4429a1f7ab6c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/98801
Commit-Queue: Austin Eng <enga@chromium.org>
Auto-Submit: Brian Sheedy <bsheedy@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>

third_party/gn/webgpu-cts/BUILD.gn

@@ -24,6 +24,7 @@ group("webgpu-cts") {
     ":copy_resources",
     ":verify_gen_ts_dep_list",
   ]
+  data = [ "test_list.txt" ]
 }
 
 list_from_ts_sources_txt = read_file("ts_sources.txt", "list lines")

webgpu-cts/BUILD.gn

@@ -34,10 +34,11 @@ group("webgpu-cts") {
     "../third_party/gn/webgpu-cts",
   ]
   data = [
+    "scripts/",
+    "../third_party/webgpu-cts/src/",
     "//third_party/node/",
-    "./scripts",
-    "./expectations.txt",
-    "../third_party/webgpu-cts/src",
+
+    "expectations.txt",
     "../third_party/webgpu-cts/node.tsconfig.json",
     "../third_party/webgpu-cts/tsconfig.json",
   ]