Make deps of GN groups public.

content/public/android/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("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
 
 content_jni_gypi_values = exec_script("//build/gypi_to_gn.py",
                                       [ rebase_path("../../content_jni.gypi") ],
                                       "scope",
@@ skipping 144 matching lines @@
     "android/view/MotionEvent.class",
   ]
 }
 
 generate_jni("content_jni_headers") {
   sources = rebase_path(content_jni_gypi_values.sources, "", "../..")
   jni_package = "content"
 
   if (enable_webvr) {
     sources += [ "//content/public/android/java/src/org/chromium/content/browser/input/CardboardVRDevice.java" ]
-    deps = [
+    public_deps = [
       "//third_party/cardboard-java:cardboard-java",
     ]
   }
 }
 
 group("jni") {
   deps = [
     ":content_jni_headers",
     ":jar_jni",
   ]
@@ skipping 28 matching lines @@
 # GYP: //content/content_tests.gypi:content_junit_tests
 junit_binary("content_junit_tests") {
   java_files = [ "junit/src/org/chromium/content/browser/input/GamepadMappingsTest.java" ]
   deps = [
     ":content_java",
     "//base:base_java",
     "//base:base_java_test_support",
   ]
 }
 # TODO(GYP): content_icudata