Make mojo/services pass in "gn check"

gpu/BUILD.gn

Index: gpu/BUILD.gn
diff --git a/gpu/BUILD.gn b/gpu/BUILD.gn
index c6c8e27477fa1b7ccd90a2202dff4b5e63e856e3..8239940abe20fabaee8de75e8b30ff37da6bd064 100644
--- a/gpu/BUILD.gn
+++ b/gpu/BUILD.gn
@@ -37,7 +37,7 @@
 # gpu/skia_bindings/skia_bindings.gyp:gpu_skia_bindings => //gpu/skia_bindings
 
 component("gpu") {
-  deps = [
+  public_deps = [
     "//gpu/command_buffer/client",
     "//gpu/command_buffer/client:gles2_cmd_helper_sources",
     "//gpu/command_buffer/common",
@@ -56,16 +56,15 @@ source_set("test_support") {
     "command_buffer/client/gles2_interface_stub.h",
   ]
 
-  deps = [
+  public_deps = [
     ":gpu",
     "//gpu/command_buffer/client:gles2_interface",
+  ]
+  deps = [
     "//testing/gmock",
     "//testing/gtest",
     "//ui/gl:gl_unittest_utils",
   ]
-  forward_dependent_configs_from = [
-    "//gpu/command_buffer/client:gles2_interface",
-  ]
 }
 
 test("gl_tests") {