Add PluginServiceStub for builds with enable_plugins==0

content/content_browser.gypi

Index: content/content_browser.gypi
diff --git a/content/content_browser.gypi b/content/content_browser.gypi
index ce16dcd6963def026b2de9ca683afe40ba0dc4bc..657ae8fc4c1b8e8cf431eb967493f04827b242f2 100644
--- a/content/content_browser.gypi
+++ b/content/content_browser.gypi
@@ -557,6 +557,8 @@
     'browser/plugin_process_host_mac.cc',
     'browser/plugin_service_impl.cc',
     'browser/plugin_service_impl.h',
+    'browser/plugin_service_stub.cc',
+    'browser/plugin_service_stub.h',
     'browser/power_save_blocker.h',
     'browser/power_save_blocker_android.cc',
     'browser/power_save_blocker_chromeos.cc',
@@ -1132,10 +1134,20 @@
       'dependencies': [
         '../ppapi/ppapi_internal.gyp:ppapi_ipc',
       ],
+      'sources!': [
+        'browser/plugin_service_stub.cc',
+        'browser/plugin_service_stub.h',
+      ],
     }, {  # enable_plugins==0
       'sources!': [
+        'browser/pepper_flash_settings_helper_impl.cc',
+        'browser/pepper_flash_settings_helper_impl.h',
         'browser/plugin_data_remover_impl.cc',
         'browser/plugin_data_remover_impl.h',
+        'browser/plugin_loader_posix.cc',
+        'browser/plugin_loader_posix.h',
+        'browser/plugin_service_impl.cc',
+        'browser/plugin_service_impl.h',
         'browser/ppapi_plugin_process_host.cc',
       ],
       'sources/': [