Make deps of GN groups public.

Source/modules/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/v8.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/modules/modules.gni")
 
@@ skipping 81 matching lines @@
 
   args = [
     rebase_path(module_names_in, root_build_dir),
     "--output_dir",
     rebase_path(blink_modules_output_dir, root_build_dir),
   ]
 }
 
 # GYP version: WebKit/Source/modules/modules_generated.gyp:make_modules_generated
 group("make_modules_generated") {
-  deps = [
+  public_deps = [
     "//third_party/WebKit/Source/core:core_event_interfaces",
     "//third_party/WebKit/Source/bindings/modules:bindings_modules_generated",
     ":module_names",
   ]
 }