[ios Mojo] Integration test for Mojo WebUI.

ios/web/test/BUILD.gn

Index: ios/web/test/BUILD.gn
diff --git a/ios/web/test/BUILD.gn b/ios/web/test/BUILD.gn
index e87674672101ffec29e22b0571147761d97e384e..eb83605f478aad3ea5d682dc6cefb2f6e0e39cd8 100644
--- a/ios/web/test/BUILD.gn
+++ b/ios/web/test/BUILD.gn
@@ -3,9 +3,37 @@
 # found in the LICENSE file.
 
 import("//mojo/public/tools/bindings/mojom.gni")
+import("//tools/grit/grit_rule.gni")
+import("//tools/grit/repack.gni")
 
 mojom("mojo_bindings") {
   sources = [
     "mojo_test.mojom",
   ]
 }
+
+repack_and_bundle("packed_resources") {
+  sources = [
+    "$root_gen_dir/ios/web/ios_web_resources.pak",
+    "$root_gen_dir/ios/web/test/test_resources.pak",
+  ]
+  deps = [
+    ":resources",
+    "//ios/web:resources",
+  ]
+  output = "$target_gen_dir/resources.pack"
+  bundle_output = "{{bundle_resources_dir}}/{{source_file_part}}"
+}
+
+grit("resources") {
+  source = "test_resources.grd"
+  use_qualified_include = true
+  outputs = [
+    "grit/test_resources.h",
+    "test_resources.pak",
+  ]

[sdefresne, 2016/05/28 13:04:02]

Ditto, this needs to list "${root_gen_dir}/ios/web/test/mojo_test.mojom.js" in
inputs and needs a dependency on ":mojo_bindings".

  inputs = [
    "${root_gen_dir}/ios/web/test/mojo_test.mojom.js",
  ]
  deps = [
    ":mojo_bindings",
  ]

[Eugene But (OOO till 7-30), 2016/05/31 17:26:57]

Done.

+  grit_flags = [
+    "-E",
+    "root_gen_dir=" + rebase_path(root_out_dir, root_build_dir),

[sdefresne, 2016/05/28 13:04:02]

Ditto, if you want the grit variable "root_gen_dir" to correspond to the gn
variable "root_gen_dir", you need the following:

  grit_flats = [
    "-E",
    "root_gen_dir=" + rebase_path(root_gen_dir, root_build_dir),
  ]

[Eugene But (OOO till 7-30), 2016/05/31 17:26:57]

Done.

+  ]
+}