Add chrome/browser/extensions to "GN check"

components/guest_view/browser/BUILD.gn

 # Copyright 2015 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.
 
 static_library("browser") {
   output_name = "guest_view_browser"
   sources = [
     "//components/guest_view/browser/guest_view.h",
     "//components/guest_view/browser/guest_view_base.cc",
     "//components/guest_view/browser/guest_view_base.h",
     "//components/guest_view/browser/guest_view_event.cc",
     "//components/guest_view/browser/guest_view_event.h",
     "//components/guest_view/browser/guest_view_manager.cc",
     "//components/guest_view/browser/guest_view_manager.h",
     "//components/guest_view/browser/guest_view_manager_delegate.cc",
     "//components/guest_view/browser/guest_view_manager_delegate.h",
     "//components/guest_view/browser/guest_view_manager_factory.h",
     "//components/guest_view/browser/guest_view_message_filter.cc",
     "//components/guest_view/browser/guest_view_message_filter.h",
   ]
 
-  deps = [
+  public_deps = [
     "//base",
     "//components/guest_view/common",
+  ]
+  deps = [
     "//components/zoom",
     "//content/public/browser",
     "//content/public/common",
     "//ipc",
     "//url",
   ]
 }
 
 static_library("test_support") {
   testonly = true
@@ skipping 11 matching lines @@
 source_set("unit_tests") {
   testonly = true
   sources = [
     "guest_view_manager_unittest.cc",
   ]
   deps = [
     ":test_support",
     "//testing/gtest",
   ]
 }