Add remoting and PPAPI tests to GN build

chrome/browser/ui/libgtk2ui/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.
 
 assert(is_linux, "This file should only be referenced on Linux")
 
 import("//build/config/features.gni")
-import("//build/config/linux/pkg_config.gni")
-
-pkg_config("gtk") {
-  # Gtk requires gmodule, but it does not list it as a dependency in some
-  # misconfigured systems.
-  packages = [
-    "gmodule-2.0",
-    "gtk+-2.0",
-    "gthread-2.0",
-  ]
-}
-
-pkg_config("gtkprint") {
-  packages = [ "gtk+-unix-print-2.0" ]
-}
 
 component("libgtk2ui") {
   sources = [
     "app_indicator_icon.cc",
     "app_indicator_icon.h",
     "app_indicator_icon_menu.cc",
     "app_indicator_icon_menu.h",
     "chrome_gtk_frame.cc",
     "chrome_gtk_frame.h",
     "chrome_gtk_menu_subclasses.cc",
@@ skipping 39 matching lines @@
 
   if (use_gconf) {
     sources += [
       "gconf_listener.cc",
       "gconf_listener.h",
     ]
   }
   defines = [ "LIBGTK2UI_IMPLEMENTATION" ]
 
   configs += [
-    ":gtk",
-    ":gtkprint",
     "//build/config/linux:gconf",
     "//printing:cups",
   ]
 
   # gn orders flags on a target before flags from configs. The default config
   # adds -Wall, and these flags have to be after -Wall -- so they need to come
   # from a config and can't be on the target directly.
   config("libgtk2ui_warnings") {
     if (is_clang) {
       cflags = [
         # G_DEFINE_TYPE automatically generates a *get_instance_private inline
         # function after glib 2.37. That's unused. Prevent to complain about it.
         "-Wno-unused-function",
 
         # G_STATIC_ASSERT uses a typedef as a static_assert.
         "-Wno-unused-local-typedef",
       ]
     }
   }
   configs += [
     ":libgtk2ui_warnings",
     "//build/config/linux:x11",
   ]
 
   deps = [
     "//base",
     "//base/third_party/dynamic_annotations",
     "//base:i18n",
+    "//build/config/linux/gtk",
+    "//build/config/linux/gtk:gtkprint",
     "//chrome/app/theme:theme_resources",
     "//chrome:extra_resources",
     "//chrome:resources",
     "//chrome:strings",
     "//components/resources",
     "//content/public/browser",
     "//printing",
     "//skia",
     "//third_party/mojo/src/mojo/edk/system",
     "//ui/aura",
     "//ui/base",
     "//ui/base/ime",
     "//ui/events",
     "//ui/events:events_base",
     "//ui/gfx",
     "//ui/gfx/x",
     "//ui/native_theme",
     "//ui/resources",
     "//ui/shell_dialogs",
     "//ui/strings",
     "//ui/views",
   ]
 }