Reland: Plugin Placeholders: Refactor for platforms that don't support plugins

content/shell/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/features.gni")
 import("//build/config/ui.gni")
 import("//tools/grit/repack.gni")
 import("//tools/grit/grit_rule.gni")
 if (is_android) {
   import("//build/config/android/config.gni")
@@ skipping 144 matching lines @@
     "renderer/layout_test/layout_test_content_renderer_client.cc",
     "renderer/layout_test/layout_test_content_renderer_client.h",
     "renderer/layout_test/layout_test_render_frame_observer.cc",
     "renderer/layout_test/layout_test_render_frame_observer.h",
     "renderer/layout_test/layout_test_render_process_observer.cc",
     "renderer/layout_test/layout_test_render_process_observer.h",
     "renderer/layout_test/leak_detector.cc",
     "renderer/layout_test/leak_detector.h",
     "renderer/layout_test/test_media_stream_renderer_factory.cc",
     "renderer/layout_test/test_media_stream_renderer_factory.h",
-    "renderer/layout_test/test_plugin_placeholder.cc",
-    "renderer/layout_test/test_plugin_placeholder.h",
     "renderer/layout_test/test_video_frame_provider.cc",
     "renderer/layout_test/test_video_frame_provider.h",
     "renderer/shell_content_renderer_client.cc",
     "renderer/shell_content_renderer_client.h",
     "renderer/shell_render_view_observer.cc",
     "renderer/shell_render_view_observer.h",
     "utility/shell_content_utility_client.cc",
     "utility/shell_content_utility_client.h",
   ]
 
@@ skipping 269 matching lines @@
 
     deps = [
       "//base",
       "//components/crash/tools:crash_service",
     ]
 
     configs -= [ "//build/config/win:console" ]
     configs += [ "//build/config/win:windowed" ]
   }
 }