Factor DRP PreviewsState logic out of content

content/renderer/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/chromecast_build.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//content/common/features.gni")
 import("//media/media_options.gni")
@@ skipping 278 matching lines @@
     "p2p/network_list_manager.h",
     "p2p/socket_client.h",
     "p2p/socket_client_delegate.h",
     "pepper/fullscreen_container.h",
     "peripheral_content_heuristic.cc",
     "peripheral_content_heuristic.h",
     "presentation/presentation_connection_proxy.cc",
     "presentation/presentation_connection_proxy.h",
     "presentation/presentation_dispatcher.cc",
     "presentation/presentation_dispatcher.h",
-    "previews_state_helper.cc",
-    "previews_state_helper.h",
     "push_messaging/push_messaging_client.cc",
     "push_messaging/push_messaging_client.h",
     "render_frame_impl.cc",
     "render_frame_impl.h",
     "render_frame_proxy.cc",
     "render_frame_proxy.h",
     "render_process.cc",
     "render_process.h",
     "render_process_impl.cc",
     "render_process_impl.h",
@@ skipping 689 matching lines @@
 # See comment at the top of //content/BUILD.gn for how this works.
 group("for_content_tests") {
   visibility = [ "//content/test/*" ]
 
   if (!is_component_build) {
     public_deps = [
       ":renderer",
     ]
   }
 }